轻便电钻
he took a portable electric drill, a coil of wire and a bucket of accessories, and went to the 17th floor to perform his job.
该名工人接获指示后进入储物房,在拿取一部手提电钻、一卷电线及一桶配件工具后便到十七楼工作。
This paper studys noise produced by portable electric drill on theory and experiment. It can help find methods of reducing portable electric drill noise.
从实验和理论上研究了手提电钻在工作时产生噪音的主要噪声源及其特点,为减少其噪音提供了依据。
portable electric drill with chuck
带卡盘的手电钻
Research On Portable Electric Drill Noise
手提电钻的噪音分析与研究
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