The cable possesses many special properties such as flame-retardant and fire-resisting, which is designed for tunnel with much requirements of safety and room.
电缆具有阻燃、耐火等多项特殊性能，专为隧道等对安全要求高的场合使用，同时电缆占用空间较小。
2
Partitions of lightweight precast concrete blocks and hollow clay blocks have fire-resisting qualities and contribute to thermal insulation. They are, therefore, widely used.
而用加气混凝土砌块和空心砖砌筑的隔墙因为其耐火和隔热性能良好也被广泛应用。
3
These may be constructed either in fireresisting materials, such as concrete, or in timber.