power valve

• 功率管,增力阀

power valve的用法和样例：

例句

1. This tendency implies a relation with the internal resistance of each type of power tube.
   这种倾向意味着与每种功率管内有关。
2. Heater can be designed into double power tubes and single power tube according to the customers request.
   加热器可根据用户的要求设计成双功率管和单功率管。