jet bit drilling 中文意思是什麼
jet bit drilling
解釋
噴射式鉆頭鉆進-
Practice and analysis of rotary - percussive drilling of impregnated diamond bit with liquid jet hammer
射流式液動錘回轉沖擊孕鑲金剛石鉆頭鉆進的實踐與分析
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