Master Plan and Detail Plan
Digital Trunking System
Trunking
集群
中继
集
线槽
干线
数
线
干
中
筒
敷设干线
中继方式
中继线槽筒形通风管道
迂回中继法
管道
数字集群
风道
Trunking communicating technology
trunking dispatch communication
11th-Five-Year Plan Period
12th five-year plan period
(APQP) Adavanced part quality plan
10th five-year developing plan
11th Five-year Plan for Sports
11th Five-Year Plan national major scientific and