The study on high power electronics equipment test has always been in a state of muddle-headed and blind.

大功率电力电子装置试验方法的理论研究一直处于混沌状态，需要有系统化的理论指导。

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Heico also sells electronics like electrical power supplies, infrared test equipment and high-speed systems to link digital cameras and high-resolution scanners to computers.

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