介绍了发动机上重要部件汽缸盖中气门导管孔和密封带在加工中心上的工艺方法，并对其进行了分析。

This article introduces the engine important parts cylinder head valve pipe hole and sealing trip on their technical method and analyse used in the machining center.

youdao

对影响气缸盖气门座圈和气门导管孔的加工精度的诸多因素进行分析。

Analyzing the many factors of affecting the processing precision of valve seat ring and valve stem guide hole of cylinder head.

youdao

对目前气缸盖气门座圈和导管孔的几种一般加工工艺进行讨论。

Discussing several ordinary processing technologies of valve seat ring and valve stem guide hole of cylinder head now.

youdao