standard frequency的例句大全

throughout europe, the standard frequency for alternating current is generally set at 50 cycles per second.

整个欧洲地区，交流电的标准频率通常设定为每秒50周。

词典精选例句

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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Ensuring the Standard Frequency of Carbody Bending Vibration of EMUs.

电动车组车体弯曲振动标准频率的保证.

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with application of the standard frequency source and the timer counter, the signal frequency and period are easily measured.

利用单片机内部高稳定度的标准频率源和定时/计数器，可方便地测量信号的频率和周期。

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According to the Ministry of Railways" Railroad Auto train Identification System Temporary Technology standard", This paper has designed a set of ATIS system, and discussed the vehicles radio frequency identification system from the principle and the constitution.

本文根据铁道部的《铁路机车车号识别系统暂行技术规范》的要求，设计了一套ATIS系统，详细讨论了车辆射频识别系统的原理、构成。

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TETRA ( Terrestrial Trunked Radio) is a digital trunked standard proposed by ETSI. It has a strong command and control functions, and has high frequency utilization, data security is good, more flexible network control.

TETRA（Terrestrial Trunked Radio）是由ETSI提出的数字集群标准，它具有较强的指挥调度功能，并且具有频率利用率高，数据保密度好，网络控制更加灵活等优点。

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Automatic Measurement System for Non-Integral Frequency Standard

非整数频标自动测量系统

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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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This system is composed by a temperature chamber, several switch groups, a PC computer, a high-resolution frequency meter, a frequency standard, a control system including a simulator and a controller, a human interface based on virtual instrument.

该开发系统由温控柜、多路开关组、PC机、高分辨率频率计、频率标准、控制系统、基于虚拟仪器的人机界面组成。

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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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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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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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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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Approaching how to distinguish outlier from different parameter estimation methods. And used this standard ( large than EX+ 3 x σ X) to estimate the design sub stage maximum tidal levels using the frequency analysis.

探讨了不同参数估计方法下如何判别特大值，并用得到的判别标准（大于EX+3×σX）对修正后的分期最高潮位序列进行频率分析确定了分期设计最高潮位。

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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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We also describe the basic principle and realization of optical clock, and believe that optical frequency standard will become new generation time frequency reference.

详细描述了光钟的原理与系统构成，并对光学频率标准与光钟的应用前景进行了展望。

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Standard sound spectrum of low-noise tire and its frequency band conversion

低噪声轮胎标准谱线及其频带转换

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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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