The invention relates to the composite coating and machining method replacing the chrome-faced piston ring.

一种取代活塞环表面电镀硬铬的复合涂层及其加工方法。

youdao

The invention relates to the composite coating and machining method replacing the chrome-faced piston ring.

一种取代活塞环表面电镀硬铬的复合涂层及其加工方法。

youdao