According to the loop principle, it puts forward the new concept of positive testing point and negative testing point. Combined with the examples, 5 basic test methods are introduced.

并根据简单的回路原则，提出了正检测点、负检测点的新概念，结合实例简述电路检测5种基本方法的使用和检测要领。

youdao

According to the loop principle, it puts forward the new concept of positive testing point and negative testing point. Combined with the examples, 5 basic test methods are introduced.

并根据简单的回路原则，提出了正检测点、负检测点的新概念，结合实例简述电路检测5种基本方法的使用和检测要领。

youdao