check valve hole 回止阀孔
gas valve hole 气阀孔
heater drain valve hole 加热器放水阀孔
check-valve hole liner 止回阀孔衬圈
valve hole misalignment 气门嘴孔位置不正 ; 气门嘴位里不正
rim tubeless valve hole 无内胎轮胎轮辋气门嘴孔
valve hole air valve cap [铁路] 阀孔风阀罩
tyre valve hole misalignment [车辆] 轮胎气门嘴孔位置不正
Measuring valve spool with holes and gaps, valve hole diameter is 50?
测量阀孔和阀芯的配合间隙，阀孔直径为50 ？
The buffering speed is controlled by the latus rectum of the buffering valve hole.
缓冲速度的快慢由缓冲阀孔的通径决定。
The metal elastic sealing sheet presses the pressure relief valve inside the pressure relief valve hole.
金属弹性封片将卸压阀卡压在卸压阀孔内。
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