time and frequency standard

Application on the Standard Time and Frequency Carried by CCTV Signals

电视信号中标准时间频率的应用

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Now we are evaluating the uncertainties with the target to establish the new generation time and frequency primary standard, with uncertainty in the order of 10-15, of this nation.

目前我们正在进行不确定度评估，可望不确定度进入10-15量级，建立我国新一代时间频率基准装置。

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Most of the square dance participants take exercise every week of the frequency. the exercise time and strength is to the standard of the sports population.

绝大部分广场舞参与者每周锻炼的频次、时间和强度达到了体育人口的标准。

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Acquisition and Transmission of Standard Time, Frequency in Power System

电力系统中标准时间、频率的采集和传输

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A new tool that can test the clock base frequency error of energy measuring devices and provide GPS standard time to calibrate real-time clock was introduced in this paper.

介绍了一种用来测量电能计量装置的时钟基频误差，并提供GPS标准时间以校准其实时时钟的新型工具。

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Dissemination of time and frequency standard of Shanghai Observatory

上海天文台时频标准的传播

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As development of science and technology, the demand for high-precision time and frequency standard is increasing.

随着科技的进步，人们对高精度标准时间频率的需求越来越高。

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High precision quartz oscillators were used for the transmission of BPV standard frequency and time signals at Shanghai Observatory.

在上海天文台BPV标频和时间信号的发播工作中，使用了高精度石英晶体振荡器。

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Software for Real Time Monitoring the Time Keeping System at NTSC Standard Time and Frequency Laboratory

NTSC时频基准实验室守时系统自动监测软件

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In order to get rid of the dependence on other countries and establish self-governed time and frequency standard, the research on atomic frequency standard is imperative under the situation.

为了改变我国时间频率系统对国外的依赖，建立我国独立的时间频率基准，原子频率标准的研制势在必行。

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NIM 4~# Laser Cooling-Cesium Atomic Fountain Clock: A New Generation of Time and Frequency Primary Standard

NIM4~激光冷却铯原子喷泉钟&新一代国家时间频率基准

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Optical clock is the most promising atomic clock and its uncertainty will reach to 10? 1 8 theoretically, which could be the time and frequency standard of the next generation.

光钟是目前公认的最具有发展潜力的原子钟，理论上预期光钟的频率不确定度可达10-18，有望成为国际新一代时间频率基准。

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Cs atomic fountain clock is the reappearance of "seconds" definition of time and frequency standard device, has the highest accuracy, as a reference clock calibration with other atomic clock, is a time and frequency system based.

Cs原子喷泉钟是目前复现秒定义时间频率基准装置，具有最高的准确度，作为基准钟标校其他原子钟，是一个国家时间频率系统的基础。

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NIM4# Cold Cesium Atomic Fountain Clock a Time and Frequency Primary Standard of New Generation

NIM4铯冷原子喷泉钟新一代时间频率基准

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A Time and Frequency Primary Standard of New Generation: NIM4# Laser Cooling-Cesium Atomic Fountain Clock

新一代时间频率基准：NIM4激光冷却-铯原子喷泉钟

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