valve envelope的意思|示意
美 / /
英 / /
valve envelope相关短语
1、 flat envelope head valve 平头气门
valve envelope相关例句
Adjustments for envelope squeeze on seats and valve testing are done by machine during factory assembly.
在工厂组装期间，采用机械设备对阀座和阀门测试封装挤压进行调整。
Adjustments for envelope squeeze on seats and valve testing are done by machine during factory assembly.
在工厂组装期间，阀座的封装挤压和阀门测试的调整都是通过机械设备进行操作。