A tension spring capable of repositioning the sprocket cutter is arranged on the cutter holder and the sprocket cutter.

刀架和扣齿刀上装有可使扣齿刀复位的拉簧。

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A tension spring capable of repositioning the sprocket cutter is arranged on the cutter holder and the sprocket cutter.

刀架和扣齿刀上装有可使扣齿刀复位的拉簧。

youdao