A roller bit

 
  • 牙輪鉆頭

A roller bit的用法和樣例:

例句

  1. The desig ner should consider comprehensively the effect of structure data and radial clea rance on the life of the roller bearing, in order to make optimum design.
    鉆頭設計要優(yōu)化軸承結構參數和徑向游隙,以提高國產(chǎn)牙輪鉆頭的壽命。
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