electrician's drill
... electrician's chisel 电工凿 electrician's drill 电工钻 electrician's hammer 电工锤 ...
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便携式电钻类工具 portable electric drills and tools
充电钻工具系列 Charging Drill Tool Series
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本文介绍了反井钻这一新型的竖井和斜井开挖施工设备，以及该设备在国内水电工程中的应用。
One advanced construction equipment for vertical and inclined shafts, named Raise Reaming Machines is introduced in this paper, together with its first application in Chinese hydropower project.
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