英语词汇“dull bit grading”的翻译、意思、用法、释义-英汉汉英词典

单词	dull bit grading
释义	dull bit grading钻头磨损表示法dull bit grading鑽頭磨損表示法礦冶工程名詞
随便看	dooghbeg doogort doohan doohan, mick doohickey doohooma dooish doojee doojee, doojie doojigger dook dooket dookie dookit dookot dooks dool doolally doolally tap doolan doolant dooleena dooley dooley, mr doolie