英语词汇“pin drill”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pin drill
释义	pin drill noun : a drill with a central pin or projection to fit into a hole to act as a guide while the hole is being enlarged or countersunk
随便看	crithidia crithidial crithidiform crithmene critic critic critical critical critical angle critical angle of attack critical apparatus critical coefficient critical constant critical density critical flicker frequency critical fusion frequency critical idealism criticality critically critical mass criticalness critical path critical philosophy critical point critical potential

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