Even though the tool is hard, it should have enough toughness to withstand the impact loads that come in the beginning of cut or to force fluctuations due to imperfections in the work material.
即使刀具很硬，也应当有足够的韧性，以承载切削初始时的冲击载荷，或应对因工件材料瑕疵所引起的波动。
2
In addition, the raw material is variegated, hard-to-cut.
此外，一个是由于原材料成为多样化，难切削。
3
It is therefore possible to easily cut the sheet-shaped material including the substrate sheet formed of hard material.