frequency reference的例句大全

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。

互联网摘选

The H maser is an essential frequency reference standard for radio astronomy.

氢脉泽是射电天文所必需的频率标准。

互联网摘选

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。

互联网摘选

The reference vector corresponding to basic vector and its role time under linear modulation mode is decided. As well as redundant switches are optimization selected by extreme value method to reduce the switching frequency.

确定了线性调制模式下参考矢量所对应的基本矢量及其作用时间；并提出了极值法对冗余开关状态进行优化选择以降低开关频率。

互联网摘选

Roberts gradient processing is carried out for the input image of joint transform correlator, and at the same time phase shift technique is applied to the reference image and binaryzation is implemented in power spectrum in the frequency domain.

我们对联合变换相关器的输入图象进行Roberts梯度处理，同时对参考图象采取相移技术，并在频域中将功率谱二值化。

互联网摘选

These signals provide an important reference of the gain of antenna, the time reference, the phase reference and the frequency of carrier wave for generating stimulant echo signal.

这些信号分别为模拟回波信号的生成提供了天线增益大小、时间基准、相位基准和载波频率大小等重要的参考信息。

互联网摘选

A counter with timing fiducial oscillator acts as a frequency multiplier, and the count value in the prior period is taken as the reference for the current period to give the decimal part of a signal period.

该方法利用带基准时基的数字计数器实现周期内线性细分，当前周期信号将前一整周期的倍频数作为参考构成信号周期的小数部分。

互联网摘选

In this curve, the point which had the largest inclined rate was a timing reference point of low frequency time-code receiver.

该曲线的斜率最大点即为低频时码接收机的秒定时参考点。

互联网摘选

Ck ( reference frequency) and?

ck（参考频率）和？

互联网摘选

At low frequency, this equation can be simplified to the stereo law of sines, but as the frequency increases the sound image position has reference to frequency.

新的公式在低频时将简化为通常的正弦定理，而随着声音频率的增加，声像位置将与声音的频率有关。

互联网摘选

The pulses of rotate speed, reference of phase and tracking central frequency of filters are provided by reference circuit.

不平衡信号处理部分由基准信号电路和振动信号电路组成。基准信号电路用于测量转速、为测量相位提供基准以及为带通滤波器的中心频率提供跟踪脉冲。

互联网摘选

Frequency Spectrum Analysis of Digital Hologram under Spherical Reference light Wave And its Application

球面参考光数字全息图的频谱分析及应用

互联网摘选

The reference power calculation method of FESS when it assist wind farm with active power and primary frequency control is studied.

研究了飞轮储能系统辅助风电场进行有功功率及一次频率控制时的参考功率计算方法。

互联网摘选

The principle of motor must be lucubrated. Therefore this thesis makes researches on the stator and rotor coupling rigid model when the generator starts up in frequency conversion. The results can provide theoretical reference to the design of generator.

本文针对变频启动时，电机在电磁激发的定转子耦合刚体模型的振动进行了理论的研究，为电机的可靠性设计提供了理论的参考。

互联网摘选

This paper studies the orbit determination of LEO satellites using GPS receivers of single frequency in condition of not depending on GPS differential reference stations.

研究在不依赖于GPS差分基准站的情况下，利用单频GPS接收机对低轨卫星进行定轨的算法。

互联网摘选

We have a suggestion of magnitude of displacement spectrum: the earthquake will be equal to each other at one frequency when their average displacement spectrum over on some focal reference sphere has the same value for P-wave ( or S-wave).

提出了位移谱震级的概念：认为按某一震源参考球的平均值，具有相同强度的P波（或S波）位移谱的地震，则震级相等。

互联网摘选

In its digital processing circuit, clock chip with high precision and temperature compensation is uesd as reference clock. High frequency reversible counter is used to count trimmed impulse signal forward or backward and two pathes SAW signals are selected timely by multichannel selector.

数字信号处理电路采用高精度、具有温度补偿的时钟芯片作为基准时钟，采用高频可逆计数器对整形后的脉冲信号进行正向或逆向计数，采用高性能的多路选择器控制两路SAW信号的定时选择。

互联网摘选

On the other hand, the mixed modulation algorithm uses the five-segment modulation algorithm and the characteristic quadrangle to approximate the reference vector which can reduce the switching frequency. Finally, a three-cell seven-level inverters experiment platform is set up.

另一方面，混合调制算法利用特征四边形法和五段算法逼近参考矢量减少了开关切换频率。

互联网摘选

The detection rate of hearing loss at high frequency for the investigated people whose length of service was greater than or equal to 2a among the contact group was significantly higher than that of the reference group ( P ﹤ 0.05).

接触组中工龄≥2a的调查对象高频听力损失的检出率明显高于对照组（P＜0.05）。

互联网摘选

Our result is almost consistent with frequency of the modes of preliminary reference earth model ( PREM). The inconsistent modes of spheroidal and toroidal free oscillation may result from lateral heterogeneous or/ and anisotropic media of the earth.

频率与PREM模型略微不一致的球型或环型振荡可以解释为地球介质的横向不均匀性和各向异性所致。

互联网摘选