建立了新型开铁口机电动钻冲机构的力学模型，计算了它的固有频率和主振型。
Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established.
建立了新型开铁口机电动钻冲机构的力学模型，计算了它的固有频率和主振型。
Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established. The natural frequencies and mode shapes of the model are calculated.
堆在收银台附近，像费雪玩具一样颜色鲜艳的它，是一个看起来不那么严肃的电动工具：一个电池驱动的锯和钻的组合。
Stacked near the checkout counters, and as colorful as a Fisher-Price toy, it is a not-so-serious-looking power tool: a battery-operated saw-and-drill combination.
结论：电动鼻窦切割钻切除部分下鼻甲术后黏膜再生较好，鼻黏膜纤毛清除系统基本恢复正常结构及生理功能。
Conclusions: The nasal mucosa regenerates well after partial inferior turbinectomy with powered microdebrider, and the nasal mucociliary clearance system recovers to normal largely.
本发明涉及一种手持式电动工具机（1）尤其是钻机、冲击钻机 或者锤钻。
The invention relates to a handheld electrical tool (1) in particular drill, rock drill or hammer drill.
本发明涉及一种手持式电动工具机（1）尤其是钻机、冲击钻机 或者锤钻。
The invention relates to a handheld electrical tool (1) in particular drill, rock drill or hammer drill.
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