安全标准

摘要在新规範贯彻执行以来，虽然钢筋混凝土抗震结构的设计安全水准有了提高，但在实际工程中发现，结构出现裂缝的现象反而更加严重和普遍，而且更不易于控制。

safety pin

Data Safety and monitoring Board

safety relief valve

occupant safety

safety means along the route

Occupational safety

safety vent

Fire safety requirements