本发明的优点是：阀芯复位速度快，复位时移动距离缩短；

The invention has the advantages that the valve core can be fast reset, and has short motion distance during resetting;

youdao

本发明的优点是：阀芯复位速度快，复位时移动距离缩短；

The invention has the advantages that the valve core can be fast reset, and has short motion distance during resetting;

youdao