HR-45M Manual Superficial Rockwell Hardness Tester adopts mechanical and manual testing method, without electrical device. With simple appearance, it uses as popular type Rockwell Hardness testing instrument.
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Two arms of the interferometer are different in length by one -quarter of a guide wavelength, allowing the device to operate at its optimal linearity point without external electrical bias.
干涉仪的两个臂长相差波导波长的四分之一，使器件在最佳线性点工作，无需外加电偏压。
No electrical or electronic device can operate without them.
电气或电子器件的操纵均离不开这些无源电子元件。
As one of important elements in the dynamic balancing measurement system, transducer is the device that converts the vibration signal caused by the imbalance into electrical signal without distortion.
传感器是动平衡测量系统中的重要元件之一，是一种将不平衡量产生的振动信号不失真地转变成电信号的装置。
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