短语词组短语BAR CLAMP HEAD KIT 木工台钳夹头bar -head d 沙坝头drop bar firing head 投棒点火头steel bar button head forging 钢筋冷镦test bar head 试棒端头dummy bar head 引锭头;引锭杆头spring tension bar head 弹簧张力棒头boring bar head 搪杆头 返回 bar head