踏下脚踏开关,接通电源,钻针旋转工作。
Tread down switch pedal, connect power supply, then holing needle starts to rotate and operate.
再钻针底部的国王。
钻针要经常磨利和更换新钻针方可确保打孔质量。
Holing needle should regularly be ground sharply and new holing needle should be replaced to ensure the quality of holing.
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