A Survey of Wide Area Protection
Wide Area Green Space System Planning of Japan
wide area measurement system
广域量测系统
广域测量系统
广域相量测量系统
广域测量
广域测量系统(WAMS)
广域同步测量系统
实时动态监测系统
实时动态监测系统WAMS
Wide area real-time precise positioning and demonstrating system
Basic farmland protection area
Biosphere protection area
coastal protection area
Delimitation of water protection area
East Dongting Lake national nature protection area
effective fire protection area
environmental protection area
Honghe Natural Protection Area
lightning protection area
local area differential GPS
maximum protection area