SINGLE PHASE
单相
单
单相.
单相变压器
单相线路-单相输电线路
单相发电机
单时相
单一相
单基质
单相的
single phase capacitor motor
single phase linear induction motor
motor single phase grounding protection
Single Phase Electric Machine
Single phase liquid flow
single phase convection
single phase earth protection
Single Phase Ground Fault
single phase alloy electrode
single phase circuit arc