running drill
英
美
- 活动钻,弓钻
双语例句
- With his bow drill, the workman bores small cavities for brads of soft copper to be hammered in, binding the pieces.
他要用弓钻现在上面打几个小孔,然后软铜做成的曲头钉穿在里面好把碎片绑在一起。
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