查询词典 class frequency

This article introduces the application design technology of wireless launcher with digital phase-lock link in automobile MP3,narrates the design idea of numeral phase-lock link,mainly introduces the PLL frequency synthesis electric circuit,the preposed frequency divider,the discriminator emphatically/discriminator,ring circuit filter design method and the steady frequency technology .

介绍了数字锁相环在汽车MP3无线发射器应用设计技术，讲述数字锁相环的设计思路，着重介绍了PLL频率合成电路、前置分频器、鉴频器/鉴相器、环路滤波器设计方法、稳频技术。

Su Taizhou City Star washing machine factory, located in Taizhou City Economic Development Zone, a domestic production base for washing equipment, mainly the production of industrial washing machines, dehydration machine, dryer, the new frequency without indentation Tangping machines, dry cleaning machines, automatic frequency suspension Washing machines, leather rubbing profiling machines, carpet cleaning machine, dryer line, dyeing machine, latex chlorine washing machine, and 3-1000 KW diesel generator, the latest development of the washing machine, dryer, Tang Ping machine, with Frequency Control, Pneumatic water, automatic temperature control, and other functions, is the true meaning of the automatic equipment, can replace imported products, according to user requirements and development of new products, updates of old equipment.

泰州市苏星洗涤机械厂，位于泰州市经济开发区，是国内生产洗涤设备基地，主要生产工业洗衣机、脱水机、烘干机、新型变频无压痕烫平机，干洗机、全自动变频悬浮洗衣机、皮革揉纹机、地毯清洗机、烘干机流水线、染色机、乳胶氯洗机，以及3-1000KW柴油发电机组，最新研制的洗衣机、烘干机、烫平机、具有变频调速，气动放水，自动控温等功能，是真正意义的全自动设备，可替代进口产品，同时可根据用户要求开发新产品，升级更新旧设备。

Based on Wavelet Packet Analysis and Smoothed Pseudo Wigner-Ville Distribution, the experiment data is time-frequency analyzed. The experimental results indicate that the amplitude of the laser-induced acoustic waves increases with the laser energy; the frequency coverage is from 0 to 150 KHz, and in the meantime there is a peak located at about 25 KHz. In addition, the spectrum and the peak of frequency are basically stable in spite of the change of laser energy and target texture.

从基本的空泡动力学理论出发，推导了空泡各特征参量之间的关系，进而对空泡动力学模型进行了修正；采用有限差分法对空泡脉动进行数值模拟，得到了空泡脉动特性随液体粘性、空泡含气量、表面张力以及可压缩性的变化规律；实验上采用光偏转测试装置探测了激光空泡脉动以及空泡溃灭的细节过程，进而分析了液体粘性和作用激光能量对空泡脉动周期、泡半径及泡能等特征参数的影响。

The FLL+ features digital frequency locked loop hardware that, in conjunction with a digital modulator, stabilizes the DCO frequency to a programmable multiple of the watch crystal frequency.

FLL+以数字式频率，与一个数字式调制器一道，稳定DCO频率对表面皿频率的一个可编程序的倍数的被锁的圈硬件为特色。

The frequency changer Surpasses the voltage fail safe is the frequencychanger middle DC voltage after achieved the degree of hazard adoptsprotective measures, this is a big flaw which the frequency changerdesigns, causes this breakdown reason in the frequency changer actualmovement many, may adopt the measure are also more, when processesthis kind of breakdown must analyze the clear breakdown reason, haspointed takes the corresponding measure to process.

变频器过电压故障保护是变频器中间直流电压达到危险程度后采取的保护措施，这是变频器设计上的一大缺陷，在变频器实际运行中引起此故障的原因较多，可以采取的措施也较多，在处理此类故障时要分析清楚故障原因，有针对性的采取相应的措施去处理。

The frequency changer Surpasses the voltage fail safe is the frequencychanger middle DC voltage after achieved the degree of hazard adoptsprotective measures, this is a big flaw which the frequency changerdesigns, causes this breakdown reason in the frequency changer actualmovement many, may adopt the measure are also more, when processesthis kind of breakdown must analyze the clear breakdown reason, haspointed takes the corresponding measure to process.

摘 要：摘要变频器过电压故障保护是变频器中间直流电压达到危险程度后采取的保护措施，这是变频器设计上的一大缺陷，在变频器实际运行中引起此故障的原因较多，可以采取的措施也较多，在处理此类故障时要分析清楚故障原因，有针对性的采取相应的措施去处理。关键词变频器电动机整流 Abstract ：The frequenc。。

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。

According to the mine shaft tunnel to the microwave frequency band in the certain degree to the channel characteristic, the radio frequency selects the microwave frequency band 433MHz to make the carrier, enables the wireless signal to carry on the effective dissemination in the line of sight distance, has the transmission stability to be good, external interference small merit.

根据井下隧道对微波频段在一定程度上相当于通道的特点，射频选用微波频段的433MHz做载波，使无线信号能够在视线距离内的进行有效传播，具有传输稳定性好，受外界干扰小的优点。

By parameter(tower total height, shell thickness, meridional curvature) analysis of cooling-tower natural frequency, we find that, the basic natural frequency of cooling tower is sensitive to the top meridional curvature, an approximate formula is proposed based on the parameters, which can estimate the basic natural frequency of cooling tower.

通过对冷却塔自振频率的参数分析，如塔体整高、塔壳厚度、子午线曲率等，发现基础频率对上部子午线曲率较为敏感，并给出了用于估算大型双曲冷却塔基础频率的三参数公式。

This paper mainly analyses dispersion frequency signals time and frequency property of triangle wave modulation. Real 5mm dispersion frequency signal is collected. The theory data and real data are compared and analyzed. It shows 5mm radar forepart is practicable, it also supplies theory base to design back signal processing circuit.

主要完成了三角波调频体制下的差频信号在时域和频域两方面的特性分析，并采集了5mm波段实际的三角波调制差频波形，通过将理论值与实测值的比较分析，表明5mm样机前端部分的可靠性，为后面的信号处理电路设计作准备。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。