楼上的,"销"可不是“销售Sales”阿？实际上是Locking
销Locking
键Key
平键 Flat key
滑键Sliding key
花键Spline
型面联接Shaft & Hub Connection
胀紧联接Expanse Connection
更多：
spline broach 花键拉刀
spline grinder 花键磨床
spline grinding machine 花键轴磨床
spline hob 花键滚刀
spline milling 花链铣
spline milling machine 花键铣床
spline shaft 花键轴
splined joint 花键接合
splined shaft 花键轴
splined shaft hob 花键滚刀
splined shaft milling cutter 花键铣刀
self locking 自销
self locking nut 自销螺母
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