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1·If in the circle has two triangles, indicated that can commutate.

如果圆圈内有两个三角形，表示能够换向。

2·Real estate area computation, in many situations, was used by the size on design paper to commutate.

房产面积的测算，在很多情况下采用设计图纸上的尺寸进行相应的计算。

3·The main loop adoption can control the silicon list mutually the bridge type to commutate electro circuit.

主回路采用可控硅单相桥式整流电路。

4·This paper USES virtual neutral point method to measure the zero crossing, then the soft deal zero crossing to get the six key position to commutate.

本文采用虚拟中点的方法来识别反电势过零点，然后对过零点进行处理得到无刷电机换向的六个关键位置。