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调制器
相关语句
  modulator
    One type of switched current ΣΔ modulator
    一种开关电流型的ΣΔ调制器
短句来源
    The Application of Multibit Oversampled ∑-△ Modulator in Data Acquisition Systems
    多位∑-△调制器在数据采集系统中应用
短句来源
    A vibration sensor using all polarization-maintaining fiber waveguide modulator
    基于波导调制器的全保偏光纤微振动传感器
短句来源
    A Data Acquisition Technology Based On Delta-Sigma Modulator
    基于∑-△调制器的数据采集技术
    A complete pulse Gunn oscillator is composed of pulse Gunn diode, microwave circuit and pulse modulator.
    完整的脉冲耿振荡器包括脉冲耿二极管、微波电路及脉冲调制器
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  “调制器”译为未确定词的双语例句
    After lucubrated the electrocircuit of magnetic core and the method of modulation comparator, we founded the simulation model of the magnetization curve and the modulation comparator under the environment of MATLAB SIMULINK to study the principle of magnetic modulation comparator.
    在深入研究铁芯线圈电路和调制直流测量原理的基础上,本文研究磁性材料的磁特性,确定钼坡莫合金磁粉芯作为调制用环形磁芯,使用Matlab 软件,建立了铁芯磁化曲线的数学模型,同时利用Simulink 工具对单铁芯和双铁芯直流调制器进行了结构建模与仿真。
短句来源
    Asymmetric Fabry - Perot GaAs/GaAIAs Multiple Quantum Well Optical Reflection Modulators
    不对称的法布里—泊洛GaAs/GaAlAs光反射调制器——工作机理及发展趋势
短句来源
    A temperature measurement system based on liquid crystal valve modulation
    基于液晶调制器调制的实时测温系统
短句来源
    Reducing the cost is currently of great need to accelerate the development of integrated chemical senors, and the study in the present thesis is partially for this purpose.
    有利于在传感器上同时集成调制器(电光、热光)进行相位微调。 目前,降低器件成本已成为加速集成光波导化学传感器发展和实用化的迫切需要,研究聚合物光波导化学传感器具有重大意义。
短句来源
    In order to validate the simulation model, we carry out a feasible experimentation.
    最后,本文通过构建实验平台,对单铁芯和双铁芯直流调制器进行电压源激励开环实验,验证了调制器仿真模型的正确性;
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  modulator
Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals
      
To conveniently carry out the pipeline leak experiment in a laboratory, leak acoustic signals are simulated by using the converse piezoelectric effect of a piezoelectric transducer (PZT) cylindrical phase modulator.
      
On the basis of the piezoelectric equations and electromechanical equivalence principle, the transfer function of a PZT cylindrical phase modulator is delivered.
      
A PZT cylindrical phase modulator is designed, and the numerical simulation is conducted.
      
Results prove that the PZT cylindrical phase modulator can effectively simulate leak acoustic emission signals when the frequency is lower than 25 KHz.
      
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In this paper, the principle and circuits of the linear oprational amplifier to use the variodes for modulator is analysed and some questions in application is investigated. The achievements have been discriminated through the chemical industry branch and have been used in some industral gas chromatography instruments in China.

本文对应用变容二极管做调制器的线性运算放大器的原理、电路进行了分析,并就应用中一些问题作了初步探讨。该项成果经化工部鉴定已用于国内研制的一些工业气相色谱仪器中。

A set-up including an electro-optic modulator is developed for photoelastic stress analysis. By means of spectrum analyser it can be used to measure the principal directions of stresses and the difference of the two principal stresses at a point in the photoelastic model. This device is sensitive and may be developed into a new type of automatic photoelastic scope.

本方法建立了包括“电光调制器”的光弹性测量装置,用频谱分析的方法可以同时测量光弹模型上各点的主应力方向及主应力差值,测量的灵敏度很高,而且可发展成一种新型的自动光弹仪.

This paper describes a bridge based on direct-current comparator for resistance thermometry.The principle of the operation and the circuit are described.The de- sign feature of the main magnetic modulator,in which low frequency noise is less than 0.2 microampere-turns,has been emphasized in the paper.An ampere-turn autobalance control scheme performaning open and close loop adjustments by means of the main and supplementary comparator has been described in detail.Experiments show that this tracking system is...

This paper describes a bridge based on direct-current comparator for resistance thermometry.The principle of the operation and the circuit are described.The de- sign feature of the main magnetic modulator,in which low frequency noise is less than 0.2 microampere-turns,has been emphasized in the paper.An ampere-turn autobalance control scheme performaning open and close loop adjustments by means of the main and supplementary comparator has been described in detail.Experiments show that this tracking system is reliable and stable.Measuring results indicate that the measurement error is less than 1.5×10~(-7) over the basic measuring range. Finally,a compensation circuit for further improving the ratio accuracy is also proposed,so that it is expected to obtain an accuracy of the order of 10~(-8) for the direct-current comparator.

本文叙述一台基于直流比较仪原理的测温电桥。文中介绍了该电桥的总体线路结构和作用原理以及低频噪声不超过0.2微安匝的磁调制器的设计特点,并对采用主、辅比较仪实现开闭环调节的安匝自动平衡控制方案作了详细描述。实验表明,该跟踪系统稳定可靠。根据测试结果,该电桥在其基本量限内的测量误差不超过1.5×10~(-7)。最后,文章还提出一种进一步提高电桥比率精度的补偿线路,使电流比较仪可望达到1.5×10~(-8)量级的极限精度。

 
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