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.
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.
本实用新型提供了一种套装在坐厕盖板上的对座厕座圈进行加热的加热套。
The utility model provides a heating jacket sheathed on a cover plate of a seat closet to heat a seat ring of the seat closet.
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