汇接用纵横制自动电话交换机的英文

concourse-connection longitudinal-transverse auto-telephone exchange

• 汇接:    tandem; junction
• 用:    40分钟跑完全程 run the c ...
• 纵横:    in length and brea ...
• 制:    make; manufacture
• 自动电话:    automatic telephon ...
• 交换机:    exchange board; sw ...