straight bit
英
美
- 一字形钻头,钻
双语例句
- 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。 - 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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