采用锯机连同带锯条一起以带锯条工作边锯齿齿尖连线为中心作回转摆动的方法，实现带锯条始终沿着锯切曲线的切线方向进行锯切。

By the method of sawing and saw blade swing taking the line of saw-teeth of saw blade's working side for centre, saw blade always works toward the tangent of sawing curve.

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手电钻用曲线锯头是一种五金工具，由壳体、手柄、传动系统以及锯条和底座构成。

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.

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