词汇	upward dual beam
释义	upward dual beam 上行式双导梁
随便看	switching-on transient switching-on voltage switching operating switching operation switching-operation-induced section switching operation method switching operations Switching-operation ticket switching optimization Switching options switching order switching oscillator switching out switching-out rate switchingover switching over switching-over Switching over bilge pumps not possible Switching over bilge pumps not possible, switching over of auxiliary power system switching over to heavy oil switching overvohage switching overvoltage switching over-voltage Switching Over-voltage