英语词汇“americium”的音标、意思、用法及中文翻译-反思网

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Is it true, for example, that one was americium?
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Practically all the plutonium 241 and americium 241 remains indefinitely immobilised below the surface layer of seabed sediments.
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It is estimated that about one third of this had decayed to give some 5,560 curies of americium 241 by the end of 1982, the rest remaining as plutonium 241.
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The americium-241 and curium-242 isotopes also were produced by irradiating plutonium in a nuclear reactor.
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Am can be used for generating heavier americium isotopes by further neutron capture inside a nuclear reactor.
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The alpha particles emitted by the decay of the americium collide with the light beryllium nuclei, producing fast neutrons.
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Americium is a relatively soft radioactive metal with silvery appearance.
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Americium is commonly used in industry as both an alpha particle and low photon energy gamma radiation source.
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Uranium and thorium also have diverse current or historical uses, and americium is used in the ionization chambers of most modern smoke detectors.
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They checked for different radioactive substances including gamma emitters, plutonium, americium and strontium.
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Its toxicity is comparable to, but slightly lower than that of americium and plutonium.
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This was the fifth transuranium element discovered after neptunium, plutonium, curium and americium.
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A small source of radioactive americium is placed so that it maintains a current between two plates that effectively form an ionisation chamber.
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See all examples of americium
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.

词汇	americium
释义	americium noun[ U ] uk /ˌæm.əˈrɪs.i.əm/ us /ˌæm.əˈrɪs.i.əm/ (symbolAm) a chemical element that is a silver-white metal. It is radioactive and is used to make smoke detectors (= devices that make a loud noise when smoke is present): 镅（一种放射性化学元素） tiny quantities of americium极少量的镅 Two new drugs have been approved to treat radiation contamination due to plutonium, americium, or curium. Officials insist that the low levels of plutonium, americium and other man-made radioactive contaminants present in the groundwater pose no public health threat. SMART Vocabulary: related words and phrases Chemical elements actinium alkali metal antimony astatine berkelium bismuth brimstone calcium fluorine germanium lithium manganese nickel plutonium quicksilver selenium silicon sodium sulphur transition metal Examples of americium americium To determine the a-value, two discs were irradiated with an -241 americium source. In the case of plutonium, the material changes its characteristics over time, mainly as a result of the formation of americium 241. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Is it true, for example, that one was americium? From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Practically all the plutonium 241 and americium 241 remains indefinitely immobilised below the surface layer of seabed sediments. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It is estimated that about one third of this had decayed to give some 5,560 curies of americium 241 by the end of 1982, the rest remaining as plutonium 241. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The americium-241 and curium-242 isotopes also were produced by irradiating plutonium in a nuclear reactor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Am can be used for generating heavier americium isotopes by further neutron capture inside a nuclear reactor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The alpha particles emitted by the decay of the americium collide with the light beryllium nuclei, producing fast neutrons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Americium is a relatively soft radioactive metal with silvery appearance. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Americium is commonly used in industry as both an alpha particle and low photon energy gamma radiation source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Uranium and thorium also have diverse current or historical uses, and americium is used in the ionization chambers of most modern smoke detectors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They checked for different radioactive substances including gamma emitters, plutonium, americium and strontium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its toxicity is comparable to, but slightly lower than that of americium and plutonium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was the fifth transuranium element discovered after neptunium, plutonium, curium and americium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A small source of radioactive americium is placed so that it maintains a current between two plates that effectively form an ionisation chamber. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of americium 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.
随便看	resembled resembles resembling resend resending resends resensitise resensitises resensitize resensitized resensitizes resensitizing resent resented resentence resentenced resentful resentfully resentfulness resentfulnesses resenting resentment resentments resents reservation

Examples of americium