网络与数据通信 无线网络 释文 physical radio layer 物理无线电层
- protection scope of patent
- protection system of the basic grassland
- protection technology
- protection term of copyright
- protection wall/facing wall in the shape of windows
- protection work of channel bank
- protection zoning of scenic regions
- protective brokers
- protective circuit for thyristor
- protective clause of long-term loans
- protective clothing
- protective clothing for medical use
- protective colouration
- protective connect to neutral
- protective current
- protective device
- protective door of railway tunnel
- protective earth embankment
- protective earthing
- protective employment policy
- protective enclosure
- protective engineering
- protective forest
- protective glasses
- protective greenbelt