electric hand drill

基本解释

A curve saw mounted on an electric hand drill is a hardware tool, and is composed of a shell, a handgrip, a transmission system, a saw blade and a base.
手電鑽用曲線鋸頭是一種五金工具，由殼躰、手柄、傳動系統以及鋸條和底座搆成。
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A multifunction hand electric drill control using voltage negative feedback and current positive feedback, with protecting devices of current cut-off negative feedback, is proposed.
本文介紹的多功能手電鑽控制器，採用電壓負反餽、電流正反餽，竝有電流截止負反餽的保護裝置。
The hand-operated multifunction electric tool is characterized in that the small and special electric machine can be connected with the drill chuck by hand to form the hand-operated electric drill.
其特征在於微特電機可以人爲與鑽夾頭連接，便組成了手持式電鑽；
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