Diamond drill
| (Engin.) | a rod or tube the end of which is set with black diamonds; - used for perforating hard substances, esp. for boring in rock. |
| See under Diamond. |
See also: Diamond, Drill
| 单词 | diamond drill | ||||
| 释义 | Diamond drill
See also: Diamond, Drill diamond drilldiamond drill[′dī·mənd ‚dril]diamond drill |
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