北京敏视达雷达公司
Beijing METSTAR Radar Company
导航雷达
navigation radar
marine navigation radar
biological value of protein
NR Navigational Radar
navar
pathfinder
pathfinders
地面警戒雷达
ground early warning radar
防空警戒雷达
air warning radar
air-defense warning radar
1-Diphenyl-2-picryihydrazyl
Awr