大型计算机化私用分支交换机
LCPBX Large Computerized Private Branch eXchange
计算机控制分支交换
computer-controlled branch exchange
私用人工分支交换
private manual branch exchange
PMBX
私用自动分支交换
private automatic branch exchange
PACX
串接交换交换
tandem switching exchange
强奇异交换交换子代数
strongly singular maximal abelian self-adjoint sub
Marcinkiewicz积分交换子
higher marcinkiewicz integral commutator
部分交换特性
part switching characteristics
差分交换式射极跟随器
Differential switched emitter follower
发交分支店货品
shipment to branch office