词汇	center runner
释义	center runner 中注管
随便看	self-acting shutter self-acting slope self acting stop valve self-acting study self-acting temperature regulator self-acting thermos selfacting thermostat self acting thermostat self-acting thermostat self acting trailer coupling self-acting trailer coupling self-acting travel selfacting twiner self-acting twiner self-acting twister selfacting valve self acting valve self-acting valve selfaction self action self-actualisations self-action self-action control self-action effect self-action energy