head face

常见例句

The reason of the formation of gas porosities and cracks on the head face of valve tappet has been studied.
本文分析了气门挺杆端面气孔、裂纹形成原因。
The sealing trough and the sealing ring arranged on the head face of the upper mouth of the cup body have good sealing effect.
在杯体上口端面上所设置的密封槽、密封圈，具有很好的密封效果。
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Methods:In this group, we applied the skin soft tissue expansion to repair the tissue defect of head face neck.
方法：采用国产硅橡胶扩张器行皮肤扩张术，修复耳鼻和头面颈部软组织缺损。

For years, researchers blamed muscle tension from tightening in the face, neck and the skin on top of the head.
And the head you are seeing at the back there he was trying to touch is his wife's face.
他用手于去触摸的那个人,是他的妻子。
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Here we have two of our T.A.'s, actually these are the two head T.A.'s, and I want you to face forward so you don't see what I'm doing.
我们的两个助教在这里,事实上是两个助教主管,把脸朝前,不要看到我的动作
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