超声扫描仪有着广泛的运用，从胎儿检查到检测飞行器构造中的缝隙。

ULTRASOUND scanners are used for tasks as diverse as examining unborn babies and searching for cracks in the fabric of aircraft.

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本文提出利用微机技术构造一种在线实时监视和测量电网、电源客观存在的谐波电压和浪涌电压的智能测试仪。

This paper presents an intelligence test set built by microcomputer technics to monitor and measure the harmonic and surge voltages in the power network and source, on-line and with a real time.

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本文介绍用电路构造智能式精密数字电阻仪的原理及技术途径。

This paper presents the principle and design method of a precision digital resistor constructed by a circuit.

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