According to isolating level, experimental animal facilities are divide four kinds, and they're isolating system, barrier system, sub barrier system, and open system.
根据隔离等级的不同，实验动物设施可分为隔离系统、屏障系统、亚屏障系统和开放系统四种类型。
2
The results show that rigid material has a better effect than flexible one in isolating vibration, so the former should be selected as barrier material in engineering.