俗称阴阳坎，凸止口为阳坎，凹止口为阴坎。50就是止口（阴坎）
门襟止口 front edge
止口豁 split at front edge ; unmeet front edge
止口反翘 front edge is upturned ; front edge sticking up
止口不直 front edge is uneven
止口下部搭叠过多 crossing at front edge
止口搅 crossed front edge
止口不顺直 uneven front edge
止口角不方正 front edge defect
止口反吐 facing leans out of front edge
门襟止口线 fly facing edge
所述的飞轮上设有风叶轮的定位止口圆。
The flywheel is provided with the locating spigot round of the fan blade.
介绍一种简单、实用的风窗止口的设计方法。
In this article, a simple and practical design method for the windshield fixing frames is introduced.
该设备系加工拖辊钢管两端止口的专用设备。
The equipment is special equipment for processing the rabbet of two ends of roller steel tube.
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