Cultural relics protection
Historical Relics Protection
location of ancient relics
ancient Chuan River connected with ancient Xia Riv
Ancient city and ancient state
Non-Balanced Protection
为保护陆生环境
经统计学所决定农药处理与欲保护区域之过当距离
利用最敏感之非目标生物为指标
另可参见缓冲区。安全距离。
(1+1)switching protection
(environmental) protection
(rapid) current cut-off protection
10 kV transmission line protection
100% stator earth fault protection