英语语法分析

The contact and the gas valve are controlled by phototriac and triac.

用光耦和双向晶闸管控制接触器和电磁阀。

Drag onto the page to add a thyristor, bi-directional triode-type, triac-gated switch.

拖到绘图页后，可以添加可控硅、三端双向可控硅开关、三端双向可控硅门开关。

This paper presents a method of converting running and starting capacitor by a triac circuit.

提出一种运用双向晶闸管电路改变单相电容电机启动与运行电容的方法。