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The cutting tool may have a single cutting edge or may have many cutting edges.
刀具可能只有一个刀刃或者可能有多个刀刃。
youdao
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All gun drills are straight-fluted, and each has a single cutting edge.
所有深孔钻都是直出屑槽的，并且均为单切削刃。
youdao
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All gun drills are straight-fluted, and each has a single cutting edge.
所有深孔钻都是直出屑槽的，并且均为单切削刃。
youdao