频率

Because light has a very high frequency, it can carry a lot more data than microwaves or radio waves, which have much lower frequencies.

由于光的频率非常高，可以比频率低很多的微波或无线电波承载更多的数据。

Because light has a very high frequency, it can carry a lot moredata than microwaves or radio waves, which have much lowerfrequencies.

由于光的频率非常高，可以比频率低很多的微波或无线电波承载更多的数据。

The character of the system is as follow: the system can generate random wave signal, the frequency of output signal can be adjusted accurately, the stability of output frequency is very high.

本系统的主要特色：可以产生任意波形的信号，输出信号的频率可精确调整，且频率稳定度很高。

In order to optimizing the vibration isolation of some diesel generator set ,an analysis of the vibration character and excitation forces of it is presented through theory study and vibration testing.

通过对频响函数的测试，获得了某型柴油发电机组隔振系统各阶刚体模态频率和弹性模态频率，分析了该机组振源和振动特点。

First of all, the circuit output waveform in the case of losing it by measuring the input voltage and output voltage in order to detect amplification of analog circuits, and then by adjusting the frequency of AC voltage source to reduce the output gain make 3db analog circuits in order to measure the maximum cut-off frequency, pass band can be obtained.

本电路首先在输出波形不失真的情况下通过测量输入电压和输出电压从而测出模拟电路的放大倍数，然后通过调节交流电压源的频率使得输出增益减少3db从而测量出模拟电路的上限截止频率，即可求出通频带。

However, a piezoelectric transformer has the highest efficiency and the highest voltage gain only when it is operated around its resonant frequency.

但是压电变压器的增益在共振频率才会达到最高的升压比与效率，所以工作频率的维持是操作压电变压器的重要因素。

The discrete frequency component of velocity fluctuation at the off-design operating conditions is generated in vortical flow region as well as in reverse flow region.

离散频率包括在非设计操作情况下产生的波动速度的频率，同旋转气流区域和反向气流区域相似。

The peak frequencies in a vortical flow are mainly observed below at four harmonic blade passingfrequency .

通过四个谐波叶片上的频率中，旋转气流的最高频率是主要观察的对象。

However, the effect of which is directly related to the voltage, frequency and wave form of power source.

而介质阻挡放电产生等离子体的效果直接与电源的电压、频率和波形相关。电压、频率越高、放电效果越好。

The air pressure wave on the surface of train body in full-scale-test working state was calculated by numerical simulation computing, the frequency range of air pressure wave was estimated, and as a conclusion, the reasonable sampling frequency can be set in the range from 300 to 500 Hz.

通过分析实车测试工况下车体表面压力波的数值计算结果，估计被测空气压力波的频率范围，确定测试系统合理采样频率可设置为300~500Hz。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐