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对平面后角型麻花钻进行了三维建模,并对主切削刃刃口进行了强化设计（钝圆或负倒棱）,得到了给定刃磨参数下麻花钻的计算机仿真模型。......
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GaSb crystal polishing technology passed technical evaluation recently.This technique is de-veloped by General Research ......
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Cutaneous needles are also known asplum-blossom needles or seven-starneedles.They are used to effect percussionon the su......
