现有自动扶梯和手动人行道安全改进规则|沙特标准|SASO-EN115-2
Safety of escalators and movingwalks–Part2:Rules for theimprovement of safety of existing escalators and movingwalks
自动扶梯和自动人行道的安全——第2部分:现有自动扶梯和手动人行道安全改进规则
Technical Regulation for Escalators and MovingWalkways