| 词汇 | example_english_background-radiation |
| 释义 | Examples of background radiationThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. An ideal environment would be a place that is naturally very cold and very dry, with low air pressure and backgroundradiation. These equations are coupled to a backgroundradiation fluid, whose dynamics are determined by an acoustic wave equation. The remainder of backgroundradiation is time invariant by comparison. For alfa-emitters the backgroundradiation levels were reached after laser-based deactivation, and for beta-emitters initial activity was reduced by a factor of tens or more. This hypothetical link between cosmic radiation and epigenetic changes may only be the tip of the iceberg regarding backgroundradiation effects. If the reactor is shut down, the gamma and neutron radiation falls to natural backgroundradiation levels. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Water and seabed silt samples showed no increase in backgroundradiation levels. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 If we are to evaluate the effect of radiation doses on the population, we must compare them with naturally occurring backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These areas having high backgroundradiation might have the required rock formation and be near the coast and, therefore, attract a private nuclear installation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Scientists believe that we are increasing the backgroundradiation in the world to the point of danger. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I am advised that the level of natural backgroundradiation is insignificant, and that its variation is, therefore, also an insignificant factor. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Those sites have been examined and no evidence of any increase in the level of backgroundradiation has been found. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 People are known to thrive in atmospheres with high backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 How about backgroundradiation or the electrical discharge one sees in storms and so on? From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The total additional radiation from testing is small compared with the backgroundradiation to which we are all subject. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Readings of natural backgroundradiation are routinely taken in areas where nuclear submarines are cleared to berth. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 People forget that there is such a thing as natural backgroundradiation and that human beings are naturally slightly radioactive. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Why should the public not be told how much more radiation they are now being exposed to when compared with the normal backgroundradiation? From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It may well be backgroundradiation, not radiation from a chimney. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Some part of the backgroundradiation can be attributed to residues from the burning of fossil fuels in power stations and elsewhere. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The radiological impact of the proposed disposals will be less than one thousandth of the average radiation dose received from natural backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The issue of potential damage to transistors from backgroundradiation is primarily a matter for those companies and organisations that design and manufacture microchips. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Whatever the detailed provisions of the law, there is a natural censorship — like natural backgroundradiation — regarding what is acceptable. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The remaining exposures, of which there were about 4,000, were not distinguishable from exposure to normal natural backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It represents a doubling of the national backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 There is no doubt that those emit a natural high backgroundradiation all the time. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Any single discharge has a backgroundradiation level lower than that in bricks and on the television screen. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These diseases commonly arise from natural causes including, in some cases, the natural backgroundradiation to which we are all subjected. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It would have to be a very large concentration to make the case, far beyond backgroundradiation or nuclear outfall. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The overall dose from either source is very small by comparison with the dose to the population from natural backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Exposure to radiation (other than normal backgroundradiation). From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 If testing continued at that rate, scientists foresaw a real risk of backgroundradiation in the atmosphere rising to levels that could he dangerous to man. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The noise was found to be due to a monitoring instrument which had been inadvertently left under the wagon cover and was responding normally to backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 However, even in the most pessimistic case in 1955, the total equivalent dose to the thoracic lymph nodes from natural backgroundradiation is greater than that estimated from plutonium. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Moreover, any increase in exposure to radiation from long-term storage or disposal of high-level radioactive nuclear waste would itself be only a fraction of the natural backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The significance of the trace quantities of radioactive materials emitted is minimal in comparison with naturally occurring backgroundradiation levels and the effect on health is negligible. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The important point is that the overall dose from either source is very small indeed compared with the dose to the population from natural backgroundradiation. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I understand that the annual radiation doses from all fall-out are small compared with the natural backgroundradiation to which we are all exposed and have been through all time. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 A high backgroundradiation plus what is termed a safe discharge from a nuclear installation could bring them to the marginal level or even the danger level. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 For example, cosmic backgroundradiation or radioactive decay as measured over short timescales represent sources of natural entropy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most human exposure to radiation comes from natural backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. That effect is notable in measurements of the cosmic microwave backgroundradiation, due to the motion of earth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since decoupling, the temperature of the backgroundradiation has dropped by a factor of roughly 1,100 due to the expansion of the universe. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because dolomite contains relatively minor quantities of radioactive materials, it can insulate against interference from cosmic rays without adding to backgroundradiation levels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Subsequent investigations have found no increase in the natural backgroundradiation in the area. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The most distant light of all, cosmic microwave backgroundradiation, is isotropic to at least one part in a thousand. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The main advantage of the bubble detector technique is that the detector is almost insensitive to backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The additional samples allow errors such as backgroundradiation and systematic errors in the laboratory setup to be detected and corrected for. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is often the single largest contributor to an individual's backgroundradiation dose, and is the most variable from location to location. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An almost perfect black-body spectrum is exhibited by the cosmic microwave backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lead absorbers can be placed around the measurement apparatus to reduce backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. According to this model, about 1% of the global population develop cancer as a result of natural backgroundradiation at some point in their lifetime. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Their work determined that the universe's backgroundradiation was 2.7 degrees above absolute zero, just 2.3 degrees lower than the 1948 prediction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There is also backgroundradiation in the infrared, x-rays, etc., with different causes, and they can sometimes be resolved into an individual source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is the number of days of an average person's backgroundradiation exposure the dose is equivalent to. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The area is known for its relatively high levels of natural backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Backgroundradiation from the packaging is also significant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He has collaborated in important studies of the early universe, including the recombination of hydrogen and the formation of the cosmic microwave backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. We are continuously exposed to this backgroundradiation during ordinary living. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This will allow us to see sources at the level of the cosmic backgroundradiation in the wavelength range between 30 and 210 m. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Subsequent studies in 1991 and 1997 found radiation levels to be at or slightly above normal backgroundradiation levels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The limit is set by slowing-interactions of cosmic ray protons with the microwave backgroundradiation over long distances (160 million light-years). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Out of the 121 proposals received, three dealt with studying the cosmological backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In astronomy, background noise or cosmic backgroundradiation is electromagnetic radiation from the sky with no discernible source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Dark matter experiments are located in deep underground laboratories, and use extensive shielding to reduce the backgroundradiation levels from cosmic rays. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because some radioactivity is present everywhere (i.e., backgroundradiation), the spectrum should be analyzed when no source is present. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The accessible areas of the structure have been certified as having radiation levels equivalent to backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Typical contributors to such risk include natural backgroundradiation, medical procedures, occupational exposures, nuclear accidents, and many others. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One component is the cosmic microwave backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The typical exposure to normal backgroundradiation for a human being is about 200 milliroentgens per year, or about 23 microroentgens per hour. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This includes both natural backgroundradiation and any medical radiation doses. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the discovery could not be verified and was later deemed to be spurious, caused instead by backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This unique case is over 80 times higher than the world average backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The discovery of microwave cosmic backgroundradiation announced in 1965 finally brought an effective end to the remaining scientific uncertainty over the expanding universe. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In particular, gamma ray bursts, galactic radiation, and the cosmic microwave backgroundradiation are examined. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Global fallout is the result, which exposes everything to an elevated level of man-made backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Directly at the sources, a radiation level about 200 time higher than the natural backgroundradiation has been measured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For those theories that aim to replace inflation, the size of ripples in the spectrum of the cosmic microwave backgroundradiation is the strictest test. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Also, the energy density includes a very small fraction (0.01%) in cosmic microwave backgroundradiation, and not more than 0.5% in relic neutrinos. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The backgroundradiation of these isotopes could exhibit an effect on fine sensors used in space. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Natural backgroundradiation comes from five primary sources: cosmic radiation, solar radiation, external terrestrial sources, radiation in the human body, and radon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An infrared detector is protected from thermal backgroundradiation outside its optical field of view. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Neutrino detectors are often built underground to isolate the detector from cosmic rays and other backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Optical astronomers and early radioastronomers were not keen to devote time to detection of this backgroundradiation in the late 1940s and 1950s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This unit is not standardized, and depends on the value used for the average backgroundradiation dose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See also commenting it. is in reasonable agreement with the actual temperature of interstellar space, but does not mention backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This frequency range is the least sensitive for natural backgroundradiation sources like cosmic radiation and especially sunlight. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For some applications the flame detector needs to be aligned precisely to take care that it does not detect potential backgroundradiation sources. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The effective radiation dose can be lower than or comparable to or can far exceed the general day-to-day environmental annual backgroundradiation dose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Surface habitats or domes are another possibility, as backgroundradiation levels are likely to be low. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The counters are surrounded by lead or steel shielding, to eliminate backgroundradiation and to reduce the incidence of cosmic rays. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A comoving observer is the only observer that will perceive the universe, including the cosmic microwave backgroundradiation, to be isotropic. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It started operations in 1999 to study the cosmic microwave backgroundradiation and ran until 2008. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Any black hole will continually absorb gas and interstellar dust from its direct surroundings and omnipresent cosmic backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With naturally occurring backgroundradiation levels so low, organisms evolving mechanisms specifically to ward off the effects of high radiation are unlikely. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The cosmic microwave backgroundradiation observed today is the most perfect black body ever measured in nature. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Their wide range use is difficult because their high sensitivity requires careful shielding from the backgroundradiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The backgroundradiation must then be subtracted from the actual measurement. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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