浮动型式组态不断电电源供给器
UPS， float-type configuration
UPS，float-type configuration
float-type configuration UPS
UPS
float-type configuration
线路交换电源供应器
line switching power supplies
不断电电源供给
power supply， uninterruptible
power supply
Uninterruptible
半自动连续带继电器交换
semi-automatic continuous tape relay switching
串接交换交换
tandem switching exchange
共电式交换机
common battery switchboard
机电式交换设备
electromechanic switching equipment
强奇异交换交换子代数
strongly singular maximal abelian self-adjoint sub
全热式交换器
total heat exchanger’s fresh air system
人公共电式交换总机
manual common battery switchboard