straight bit

 
       
  • 一字形钻头,钻

straight bit的用法和样例:

例句

  1. He dove straight into the new book and read all night.
    他一头钻进那本新书里,读了个通宵。
  2. In drilling an oil well, mud is used to lubricate the cutting bit.
    钻油井时,泥浆被用来润滑钻头。
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