高频率

Therefore,a high outlet mach number cangeneratea frequency that will match the valve/pipe systemresonancefrequency and this will lead tovibration.

因此，高的阀门出口马赫数将能够产生一个与管道系统频率相配合的频率，这将导致发生共振。

According to mistuned blade design for the asymmetry stator, the wake force on rotor changed from single frequency and higher amplitude to multi-frequency and lower amplitude.

不对称静子叶片分布非谐设计下，转子所受到的激振力由静子叶片均布情况下的单频率高幅值激振力转变为多频率成分低幅值激振力。

To reduce the dynamic stress of rotor blades under the wake of front stator vane,an asymmetry stator mistuned design was conducted.

不对称静子叶片分布非谐设计下，转子所受到的激振力由静子叶片均布情况下的单频率高幅值激振力转变为多频率成分低幅值激振力。

According to a known work frequency, the medium thickness and its dielectric constant, the micro-band line width, the sizes of the substrate, the quadrant metallic plate and high resistant surface gap are computed preliminarily then to determine its final sizes by optimizing and emulating utilizing the emulation software of HFSS8.0 edition.

根据已知的工作频率、介质厚度及其介电常数初步计算出微带线宽度、介质基片大小、正方形金属贴片尺寸以及高阻表面间距；利用电磁场HFSS8.0版的仿真软件优化仿真确定最后尺寸。有望应用于双星定位收/发集成天线及相应工作频率的电路中。

Reservoir bed is distinguished by providing the information about resistivity of formations using Electromagnetic Propagated Resistivity Logging method with several mega-hertz operation frequency. The information of dielectric constant of invaded zone is provided using Ultrahigh-frequency Electromagnetic Wave Logging method with above 200 mega-hertz operation frequency, which has no enough radial investigation depth but has a good vertical resolution.

几兆赫兹电磁波传播电阻率测井通过提取地层电阻率的信息来判别油层，以SPPRRYSUN公司源频率为2MHz的EWR-3D测井仪为代表。200 MHz以上的超高频电磁波传播测井具有很高的垂向分辨率，但探测深度太浅，基本上只能反映侵入带介电常数的信息，SCHLUMBERGER公司已推出源频率为1 。1GHz的EPT测井仪。

Behavior of lying-on-the-bed and side-lying, abdomen-contracting and cub-licking were frequently happened, which accounted for 20.41%、13.36% and 21.48% respectively, more than half of the whole activity.

雌虎在产床上躺卧、侧卧努责和舔仔行为发生频率比较高，频率分别达到20.41%、13.36%和21.48%，总和达到了所有行为频次总和的一半以上。

It is found that there exist quasi-45 d,quasi-23 d and quasi-14 d low-freque ncy precipitation over the plateau and that the lower of the frequency,the more likely of their propagation from south- and east-side of the plateau to the pl ateau itself,and v.v.

研究表明，准45 d、准23 d和准14 d等3类低频降水的频率愈低，低频降水愈趋向于从高原东侧和南侧向高原传播；反之，频率愈高，低频降水愈趋向于由高原向高原东侧和南侧传播。

A pigtailed acoustooptic Q-switch is inserted between the totally reflected fiber Bragg grating and the combiner's signal port. During the experiment, the operation of the acoustooptic Q-switched Yb3+-doped all-fiber laser is realized.

谐振腔高反端串接一个带尾纤的声光Q开关，实现了重复频率在10 Hz～100 kHz范围内可调声光调Q掺镱全光纤激光器的实验运转；在重复频率500 Hz时，脉冲宽度为3 μs，脉冲能量达到2.94 mJ。

Frequency stabilization laser based on transverse Zeeman effect provides several characters such as high stabilization frequency.

基于横向塞曼效应的稳频激光器，频率稳定度高，抗干扰能力强，输出功率大，差拍信号频率低、易于接收和处理，可直接输出相干性和偏振度都很好的线偏振光，便于测量偏振、双折射等物理量。

It was clear that the Cherenkov radiation is result of the coupling between the slow TM mode propagated along the waveguide and the negative-energy space-charge mode propagated along the beam, and the coupling strength is proportional to the beam density.

分析结果表明：切伦科夫辐射是由沿介质同轴波导传播的慢波与沿薄环形相对论电子注传播的负能空间电荷波耦合所致，且其耦合强度与电子注的密度成正比；输出频率和波增长率随着填充等离子体密度的增大而提高；保持一定的输出频率，增大电子注的束流可得到高的微波输出功率。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！