“板机”用英语怎么说？

射击运动员连扣板机,弹无虚发.The marksman squeezed off successive rounds and every one told.你知道那枪的板机拉力是多少 吗 ?Do you know what a trigger pull test is?出口应该是冲床,剪板机,滚扎机.每样两台.Press break machine , hydrolic shearing machine and cnc sheet ro...