| 词汇 | example_english_time-signal |
| 释义 | Examples of time signalThese 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. The light serves as a timesignal rather than a food substitute. Still, there exists no straightforward method to adjust it, and one should usually have a look at the timesignal and the frequency spectrum to find proper values. Whether one has a double tape with an automatic timesignal spoken into it, and a copy handed sealed to a senior police officer in the presence. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 All chronometers and watches should be checked regularly with a radio timesignal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Slang term for the timesignal broadcast by some radio stations at the top of the hour. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Special purpose radio timesignal stations transmit a signal that allows automatic synchronization of clocks, and commercial broadcasters still include time signals in their programming. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This makes radio-controlled timing possible in remote areas that are not serviced by land based radio timesignal stations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A signal of continuous amplitude and time is known as a continuous timesignal or an analog signal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A timesignal is given when 15 minutes remain. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Observatories had been selling exact time since the 1850s and transmitting the noon timesignal via telegraph lines to customers, usually nearby cities and railroads. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The button itself does not actually trigger the drop; that is done from a control room, synchronized using a government timesignal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The minimum number of samples per unit area required to completely recover the continuous timesignal is termed as optimal sampling density. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If the guessing player guessed the name after the timesignal sounded, the team was still charged for the letter that should have been used. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some timesignal broadcasts give voice announcements of an impending leap second. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The signals were transmitted to sounders as second ticks and pauses that culminated in a noon timesignal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The format of the service is similar to that of radio timesignal services. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The drawback of using phase-modulated time signals lies in the complex instrument grade receiving hardware required for using this timesignal reception method. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although there are many ways of obtaining a discrete representation of a continuous timesignal, periodic sampling is by far the simplest scheme. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The 9:00 pm firing was later established as a timesignal for the general population. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are dedicated radio timesignal stations around the world. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It can be heard in the transmission of certain radio timesignal stations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The observatories used their celestial equipment to measure exact time and then transmit a timesignal via telegraph lines to subscribers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Under such conditions, a continuous timesignal can not be perfectly recovered from its samples. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As opposed to other timesignal transmitters, the signal format is not published openly; a special license is required. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To contrast, a discrete timesignal has a countable domain, like the natural numbers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Until late 2012, the timesignal is simply a short pip on the 59th second before the hour and a longer pip on the top of the hour. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The 21:00 firing was later established as a timesignal for the general population and to allow the chronometers of ships in port to be accurately set. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A simple source for a discrete timesignal is the sampling of a continuous signal, approximating the signal by a sequence of its values at particular time instants. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The difference is the linear transform can be inverted to construct the timesignal thus it is more suitable for signal processing, such as noise reduction and time-varying filtering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This implies that a signal in frequency may have more than one signal in time; the correct time signal for the transform is determined by the region of convergence. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Combining these two, if we start with a timesignal which is both discrete and periodic, we get a frequency spectrum which is both periodic and discrete. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Therefore, for the turbulent mixing layer, there is no dominant local criterion to align the time signals based on any feature of the signal itself. The reciprocal use of the term at that time signaled solidarity, equality, respect, and intimacy among the revolutionaries. When an announcement, jingle or graphic overlaps with a fixed point in the schedule (e.g. the news or a timesignal), usually due to poor timing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A prerecorded tape gave time signals to indicate when the visual stimulus was to be presented on the overhead and when it was to be removed. It was later made more universally accurate by the electric telegraph and then by radio time signals. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 As real world signals are continuous time signals, multidimensional sampling plays a crucial role in discretizing the real world signals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. By 1904 time signals were being sent to ships to allow navigators to check their chronometers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This allows the watch to have the same long-term accuracy as the atomic clocks which control the time signals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Time signals, on the contrary, are not a problem in a well-defined network with a fixed delay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This continued until the 1940s, when time signals began to be broadcast using the radio by the government. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. After the war, a pendulum clock was installed and regulated by radio time signals from other timekeeping centres. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The internal oscillator which provides the time signals is called the "timebase", and must be calibrated very accurately. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Intermediate time signals are given when 10 minutes and two minutes remain. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They also receive and use time signals from the satellites, which make them essentially perfectly accurate timekeepers, even over long periods of time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was of particular value in surveying remote areas, where time signals allowed accurate determination of longitude. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The advent of electrical telegraphs allowed widespread and precise distribution of time signals from central observatories. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although its broadcasts occasionally included band concerts and speeches, it was most famous for its nightly time signals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Judges give speakers time signals to help them pace their presentations, usually starting from five minutes remaining. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Time stations operating in the longwave radio band have highly predictable radio propagation characteristics, which gives low uncertainty in the received time signals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A variety of protocols are in common use for sending time signals over radio links and serial connections. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. While important mathematically, systems that process discrete time signals are difficult to physically realize. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This included transmission of weather forecasts, news bulletins and time signals, sending medical advice to ships with no doctors aboard, and monitoring for distress calls. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Real world signals, which are generally continuous time signals, have to be discretized (sampled) in order to ensure that digital systems can be used to process the signals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since these frequencies propagate by ground wave only, the precision of time signals is not affected by varying propagation paths between the transmitter, the ionosphere, and the receiver. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When more accurate time signals were required in navigation, a number of traditional audible or visible time signals were established so navigators could check their marine chronometers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Time signals were transmitted to all telegraph stations in each colony at one o'clock each day and weather observations were likewise transmitted back to the state capitals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Finally, the combination of the availability of marine chronometers and wireless telegraph time signals put an end to the use of lunars in the 20th century. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Railways were among the first customers for time signals, which allowed synchronization of their operations over wide geographic areas. 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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