在进行冲压操作时,无论是剪板、冲裁还是成形,手绝对不允许放在刀口或模具之下
正确
暂无解析
Forthoseinvolved,thescandalhasbeenavery________(pain)experience
Ithoughtherrequestforfinancialaidwas___(reason),butsomehowitwasrefused.
Idon’tneedanyhelpatthemoment,butI_____youroffer
一质点做匀变速圆周运动时,其()
一质点做匀速率圆周运动时,其()