片语
balanced protective system[自]
balanced binary system平衡二进制系统
balanced polyphase system平衡多相系
balanced d system平衡系统
a balanced transportation system平衡发展交通系统
balanced ventilation system平衡通风系统
balanced protection system平衡保护系统
balanced lethal system平衡致死品系
balanced polygenic system均衡的多基因系统