GB/T 30559.2-2017电梯、自动扶梯和自动人行道的能量性能第2部分:电梯的能量计算与分级国家标准
英文:Energy performance of lifts, escalators and moving walks – Part 2: Energy calculation and classification for li...
英文:Energy performance of lifts, escalators and moving walks – Part 2: Energy calculation and classification for li...