电子天平是采用电磁力平衡的原理，应用现代电子技术设计而成的。
Electronic balance is the use of electromagnetic force balance principle, the application of modern electronic technology design made of.
采用电磁感应原理设计出宽频高灵敏度脉冲电流传感器。
Based on the electromagnetic induction principle, wide band and high sensitivity current sensor was developed.
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