1) sharpener
[英]['ʃɑ:pnə(r)] [美]['ʃɑrpənɚ]
锻钎机
2) bit sharpener
钻头修整机;截齿修整机;锻钎机
3) hard-solder forging cutting pick
锻造钎焊截齿
1.
The damage styles of cast-in cutting pick and hard-solder forging cutting pick are analyzedaccording to the comparing experiment under coal mining well.
镇铸截齿具有耐磨、抗弯曲的优点，但有折断现象；而锻造钎焊截齿抗折断性好，但耐磨、抗弯曲性远低于镶铸截齿。
5) rotational mechanism
转钎机构
1.
Combining traditional DTH hammer with pneumatic rock drill,by reference to the rotational mechanism of rock drill,studies the rotational mechanism of DTH hammer and introduces a new type of DTH hammer that uses backstroke energy of piston to drive drill to rotate.
借鉴凿岩机的转钎机构,利用活塞的回程能量带动钻头旋转。
补充资料：断截截
1.形容剪裁利索。
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参考词条