... chase || 模套，沟，刻划，雕镂 chaser || 螺纹刀 chassis || ①底盘，底板，基座②机壳，机箱(电子仪器的)③摆线运动规律 ...
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本文分析了用单刃螺纹刀来加工螺纹的方法。
This paper analyzes the method of processing thread with the knife with single blade screw thread.
我们当中一些口袋里装着削笔刀的(大多数)会在无聊时在铅笔上刻圈子和螺纹，但却从来没雕过这些。
Those of us who carried pocket knives for sharpening pencils (most of us) might also carve out rings and spirals when we were bored. We had nothing on these guys though.
用商用电动螺丝刀松开螺钉可能导致轴锥齿轮和螺纹盘向内移出花键，致使螺钉失效。
Loosening the screw using a commercially available electric screwdriver can cause the shaft bevel gear and threaded disc to move inwards out of the splines rendering the screw ineffective.
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