A.壓力開關(guān) B.流量開關(guān) C.溫度開關(guān) D.控制開關(guān)
A.J63Y-250P B.J23W-320P C.J63Y-P57320V D.J63Y-320P
A.650℃ B.750℃ C.850℃ D.950℃