电路交换的交换局
circuit switching exchange
矫形外科用的装置的安装和调整
Fitting and adjustment of orthopaedic device
串接交换交换
tandem switching exchange
磁带交换装置
magnetic tape switching unit
电话交换装置
telephone switching equipment
telephone switching device
干湿灰交换装置设计
Design of Dried-Wet Grain Cement Exchange Device
交换装置远程计算系统
exchange device remote computing system
空-水冷却热交换装置
Air-water heat exchange devices
空-水热交换装置冷却方式
air-water heat exchanger for cooling
强奇异交换交换子代数
strongly singular maximal abelian self-adjoint sub