| 单词 | breast drill |
| 释义 | breast drill (once / 1181932 pages) n WORD FAMILY breast drill USAGE EXAMPLESBreast drill, a portable drilling machine, provided with a breastplate, for forcing the drill against the work. Webster, Noah, Webster's Unabridged Dictionary—(2n...(2012) For drilling small holes in metal, the breast drill shown in Fig. Rose, Joshua, Modern Machine-Shop Practice, Volum...(2012) A valve grinding tool patterned largely after a breast drill is shown at Fig. Pag?, Victor Wilfred, Aviation Engines—Design?Constructio...(2011) n a portable drill with a plate that is pressed against the chest to force the drill point into the work Hyper drill a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows) |
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