查询词典 high frequency

The structure,voltage-dividing theory and design method of the load were presented. The influence of skin effect on the load's resistance in high frequency was analyzed. The distribution of electric-field intensity in the load and vacuum cavity was calculated. The equivalent capacitance and inductance of the load were calculated,of which the influence on the output waveforms was simulated using Pspice program.

介绍了电阻分压器型负载的结构、分压原理和设计方法，分析了高频作用下趋肤效应对负载阻值的影响，计算了负载和真空腔内的电场强度分布以及负载的等效电感和等效电容，利用Pspice程序模拟了回路参数对输出信号的影响。

Under the high frequency vibrating action, the crystal grain formed on the surface of the crystal nucleus eradiation equipment would be broken and peeled off, thereby ejected to zinc molten pool continuously and served as crystal nucleus source of equiaxed grain during solidification.

结果表明，当一种带有冷却结构且进行高频振动的晶核发射器插入锌液内时，锌液在晶核发射器表面迅速形核且长大，在高频振动作用下表面形成的晶粒将被折断剥离，从而连续不断地弹射到锌液中，成为凝固过程中形成大量等轴晶的晶核来源；采用带有水冷和气冷结构的晶核发射器对锌液进行振动激发形核处理后，锌凝固组织中的等轴晶率可分别提高到65%和80%。

We have high-frequency machine the size of more than 100 units, and have the new product development and design professionals, to advance the estimated market demand.

本厂拥有大小高周波机台100多台，并具有对新产品的开发设计的专业人才，可以提前预估市场的需求。

Ethene are mainly adsorbed by p electron interaction with high frequency sites in Cs/HMor.

Cs~+离子置换了低频吸附位SiOH中的氢后，转变为高频吸附中心Si-O-Cs。

In china, it's clear that the iceberg fading away will bring us a terrible disaster, such as the lack of the water, the high frequency of the flood, the degeneration of the everglade and the uneven river system etc..

在中国，冰山的退化所产生的影响日趋明显，其中包括水资源短缺、水患频发、湿地退化和河流系统稳定性降低等。

When the residual modes are high frequency modes, it will be suitable to use a filter to prevent the spillover by filtering the measuring signals. The closed loop poles would excurse if the measuring signals were filtered directly.

对于剩余模态和控制模态分离得较好的受控对象，可采用对测量信号进行滤波去除信号中剩余模态分量的方法防止溢出问题。

Based on a series of signal process and noise source identification techniques, especially the major noise source identification methods, such as expurgation method, sound intensity analysis, spectrum analysis vibro-acoustic correlation analysis and so on, the pass-by noise control of SC7080A and SC6360B are studied in detail. By the roadway and dais experiments, the major noise and radiating parts are identified and some economical controlling methods are made. For the SC7080A, to control the emissing noise from the intake and shell vibration of air cleaner, a intake muffler is installed between the air cleaner and intake valve. Based on the theory of Helmholtz resonator, One three-parallel-connected resonant silencer is designed and trial-manufactured. For the SC6360B, the attenuation performance of exhaust muffler in high frequency region is improved. To reduce the vibration noise of shell part, the structure of oil sump tank, exhaust manifold shield and exhaust manifold shield are analyzed and improved. At the same time, some measures, such as sound absorption, sound insulation, are taken to reduce the noise of engine surface emissivity and a sound shield is designed.

本文首先综述了目前国内外汽车加速噪声控制的现状、主要方法和技术措施，在此基础上，结合SC7080A和SC6350B汽车的车外加速噪声水平及现状，综合运用分别运行法、声强法、频谱分析法、声振相干函数法等现代噪声源识别方法，对SC7080A和SC6360B汽车进行了准确详细的车外加速噪声源识别并提出了经济可行的控制方案，针对SC7080A，主要在空气滤清器和进气阀门之间的进气管道上加装进气消声器，抑制空气滤清器壳体表面和进气口两处的噪声辐射，根据Helmholtz共振腔原理设计了三腔并联旁支型共振消声器，并进行了工程化设计和试制；针对SC6360B，主要改善了排气消声器在高频段的消声性能，对罩壳类零件进行了结构改进，降低了其表面噪声的辐射，并对发动机舱进行了吸声、隔声处理，设计了发动机隔声罩。

The Company in the development and fabrication of high-frequency electronic products also have 10 years of experience.

本公司在开发制造高频电子产品方面也有10多年的经验。

In this paper ,the failure analysis of a type of high frequency power transistor is introduced .

介绍了对某型号高频大功率晶体管进行的失效分析。

These results suggest that the changes in K(superscript +) channel characteristics may increase the fatigability during high-frequency tetanic contraction in atrophic soleus.

萎缩比目鱼肌纤维膜上K通道的改变，可能是引起其高频强直收缩疲劳性增加的主要因素。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失