常见例句雙語例句The screw ball and spherical bowl is one important set of punch, of which the quality have significant effects both on the precision and life-span of the punch machine.帶圓型球頭的螺杆、球碗是鍛壓機牀中的重要部件，其質量對機牀精度、壽命有重大影響。 返回 punch bowl set