单词 | machine drill |
释义 | > as lemmasmachine drill machine drill n. ΘΚΠ society > occupation and work > equipment > piercing or boring tools > [noun] > drill > power drills steam drill1801 power drill1867 machine drill1869 1869 W. Gladden From Hub to Hudson 91 It not only serves to move the piston of the machine drill, but ventilates the tunnel. 1936 Economist 12 Oct. 714/1 While this may be possible with machine drills in development faces, it is difficult at the moment to see how such appliances could be used with mobile jackhammers in stoping. < as lemmas |
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