如在简单的机器上的区段所指出的，一个螺丝钉以一个楔住行动行事而且有圆形圆筒(或者切断了圆锥体)与一螺旋状的在它里面的凹槽。
As indicated in the section on simple machines, a screw ACTS with a wedging action and consists of a circular cylinder (or truncated cone) with a helical groove in it.
本发明公开了一种带有具有不同深度钉成形凹槽的砧座的外科缝合装置。
The present invention provides a surgical stapling device with anvil having staple forming pockets of varying depths.
所述外科缝合装置包括端部执行器，所述端部执行器包括具有钉成形表面的砧座，所述钉成形表面限定了多个钉成形凹槽。
The device comprises an end effector that comprises an anvil having a staple forming surface defining a plurality of staple forming pockets.
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