Discussing several ordinary processing technologies of valve seat ring and valve stem guide hole of cylinder head now.
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。
Analyzing the many factors of affecting the processing precision of valve seat ring and valve stem guide hole of cylinder head.
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。
The utility model discloses a novel vehicle-mounted head pipe, the sidewall of which is provided with at least one line guide hole for wiring harness to get through.
本实用新型公开了一种新型车用头管，头管侧壁至少设有一个供线束穿设的导线孔。
The utility model discloses a novel vehicle-mounted head pipe, the sidewall of which is provided with at least one line guide hole for wiring harness to get through.
本实用新型公开了一种新型车用头管，头管侧壁至少设有一个供线束穿设的导线孔。
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