![]() Safety of machinery—Permanent means of access to machinery—Part 4: Fixed ladders 机械安全 接近机械的固定设施 第4部分:固定式直梯 |
![]() Safety of machinery—Permanent means of access to machinery—Part 1: Choice of fixed means and general requirements of access 机械安全 接近机械的固定设施 第1部分:固定设施的选择及接近的一般要求 |
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