The cutting ends each have a cutting tip at a distal end, a body portion, a recess in the body portion and a retainer positioned in the recess.
每个切削端都具有在其末端的切削头，主体部分，主体部分中的凹口以及定位于凹口中的套圈。
The cutting ends each have a cutting tip at a distal end, a body portion, a recess in the body portion and a retainer positioned in the recess.
每个切削端都具有在其末端的切削头，主体部分，主体部分中的凹口以及定位于凹口中的套圈。
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