GB/T 17888.3-2020机械安全接近机械的固定设施第3部分:楼梯、阶梯和护栏标准
英文:Safety of machinery—Permanent means of access to machinery—Part 3: Stairs, stepladders and guard-rails GB/T 17888.3-2...
英文:Safety of machinery—Permanent means of access to machinery—Part 3: Stairs, stepladders and guard-rails GB/T 17888.3-2...