鋁、銅工件材質較軟，美工刀裁切遮護膠帶時，刀銳角因避免直接與工件接觸，

鋁、銅工件材質較軟，美工刀裁切遮護膠帶時，刀銳角因避免直接與工件接觸，以免傷到工件，使工件產生倒角或R角。

結果 (英文) 1:

Aluminum, copper work piece material is relatively soft, when the masking tape cutter utility knife, the knife at an acute angle by avoiding direct contact with the workpiece, to avoid injury to the workpiece, the workpiece is generated or R chamfered corners.

結果 (英文) 2:

Aluminum, copper workpiece material is soft, art knife cutting masking tape, knife sharp angle because to avoid direct contact with the workpiece, so as not to hurt the workpiece, so that the workpiece has a chamfer or R angle.

結果 (英文) 3:

The material of aluminum and copper workpieces is soft. When the art cutter cuts the masking tape, the sharp angle of the cutter shall not contact with the workpieces directly, so as to avoid damaging the workpieces, resulting in chamfering or R angle of the workpieces.