网络与数据通信 协议体系与组成结构 释文 tunneling 隧道技术
- drainage dewatering
- drainage ditch on slope
- drainage during construction
- drainage engineering management
- drainage floor drain
- drainage gas production technology
- drainage in ancient China
- drainage index
- drainage in saline-alkali land planting
- drainage & irrigation textiles
- drainage lifting equipment
- drainage management
- drainage map
- drainage method
- drainage modulus for surface waterlogging control
- drainage network
- drainage of exploratory tunnel
- drainage of operating tunnel
- drainage of tunnel and underground engineering
- drainage of tunnel arch
- drainage of tunnel substructure
- drainage oil
- drainage pattern
- drainage pavement
- drainage pipe