双电源自动切换箱柜 AT
双电源切换箱 Double Power box ; Double-power switch box ; Double power source cut box ; Dual power switch box
电源切换箱 power change-over box ; power transfer switch box ; changeover box
速收件箱切换 fast inbox switchellong ; fast inbox switching
双电源切换开关箱 changeover box for tow-power ; tow-power source changeover switch box
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