查询词典 frequency conversion

AC Test Power Supply with AC-DC-AC conversion means, effectively prevent the mains voltage and frequency fluctuations of the dielectric loss test the accuracy of the impact of even the generator, the instrument can also be run correctly.

交流试验电源采用AC-DC-AC转换方式，有效避免市电电压及频率波动对介损测试准确性影响，即便是发电机发电，该仪器也能正确运行。

This dissertation introduces the whole scheme、the hardware electro circuit design and software design, the result of experiment on salinometer is preferred at the end of the dissertation. Salinometer is base on SOPC technology, and use digital technology to design circuit: the excitation source for balance bridge is generated by digital method, its shape、amplitude and frequency can be control by digital signal, the standard branch of bridge is composed of three digital-analog-conversion, and uses the method of successive approximation to regulate the balance of bridge.

盐度计以SOPC技术为基础，通过数字化方式设计测量电路：电桥的激励源由数字化方式产生，激励源的波形、幅值和频率等可由数字量控制；平衡电桥标准支路由3个数模转换器组合实现，测量时以逐次逼近的方式调整电桥的平衡度；检测电桥平衡度的高灵敏度数字检流计同样以数字化方式设计，它的增益由程序控制，将电桥的输出电压数字化，以软件判断电桥平衡度。

The IAM-93516 is ideally suited for frequency down conversion forbase station radio card receiver, microwave link receiver, MMDS,modulation and demodulation for receiver and general purposeresistive FET mixer, which require high linearity.

IAM-93516是理想的适合无线电基站图表接受器、微波连接器、MMDS的下变频器和接受端的调制器、解调器，一般的用途FET混频器，需要有很到的线性度。

The IAM-93516 is ideally suited for frequency down conversion for base station radio card receiver, microwave link receiver, MMDS, modulation and demodulation for receiver and general purpose resistive FET mixer, which require high linearity.

IAM-93516是理想的适合无线电基站图表接受器、微波连接器、MMDS的下变频器和接受端的调制器、解调器，一般的用途FET混频器，需要有很到的线性度。

This may include basic digital scan/general automation CMYK conversion settings, inkjet proofing, industry-standard business card printing and membership card making seeastigmatism, medium-frequency of business card printing and membership card making product consistency and quality check random bookbiding.

这可能包括基本的数码化扫描/一般的自动化CMYK转换设置、喷墨打样、行业标准的制卡和会员卡制作色差、中等频率的制卡和会员卡制作品一致性检测和随机的装订质量检查。

Based on the strain energy model presented by Sun-Zhang and the energy conversion and energy conservation,a new semicontinuum model is presented to calculate the nature frequency of a nanoscaled clamped-clamped silicon beam.

基于Sun-Zhang提出的应变能量计算模型，根据动势能转换与守恒原理，提出了用于分析硅纳米梁基波频率的半连续体模型。

By conversion of similarity principle, the prototypes intrinsic frequency is achieved.

总之，用模型的的实验结果和模型的计算结果加以对比，预测了该桥实用性和经济可靠性。

Some classical applications and research progress are introduced, such as, selective amplification, frequency multiplication, up-conversion and signal generation in the terms of the gain spectrum as well as the carrier suppression and phase shift from the loss spectral point of view.

从受激布里渊散射增益谱的角度对微波光子信号的选择放大、倍频、上变频和信号产生以及从损耗谱的角度对信号载波抑制和信号相移等典型应用和研究进展进行了介绍。

The realization scheme of this project is also discussed in the paper, a data pick-up/control board using PCI bus protocol is designed, this board together with some softwares can finish many functions such as AD conversion of DC system generatrix and every DC spur track, sine wave generation which frequency is between 0-50Hz , and some control functions in fault analysis system.

本文还进行了故障检测装置实现方案的有关研究，设计了基于PC机的直流电网故障诊断系统，完成了基于计算机PCI总线的数据采集控制卡的设计，该卡配合计算机软件可以实现电网正负母线，各支路互感器输出等多路模拟量信号的采集，产生0-50Hz之间任意频率的低频信号源，并且能够完成故障检测中的各种控制功能。

The theoretical analysis and simulation results of 1kW 40~60VDC/380VDC full-bridge Boost mode two-input DC-DC converter have shown that the converter has the advantages such as double isolation among multiple input sources and between output and input of the converter, simple topology, strong voltage matching ability, multiple input sources can supply the power simultaneously or individually, small input current ripple, high power density, high conversion efficiency, high reliability at short circuit, magnetic flux of high-frequency transformer easy to add up etc.

1kW 40～60VDC/380VDC全桥Boost型双输入直流变换器的理论分析和仿真结果表明，这种变换器具有多路输入源之间以及输出与输入源之间双隔离、电路拓扑简洁、电压匹配能力强、多路输入源可同时或分时供电、输入电流纹波小、功率密度高、变换效率高、负载短路时可靠性高、高频变压器磁通易于叠加等优点。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。