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自动扶梯,又称自动梯、自动电梯或自动滚梯。我国第一部自动扶梯于1960年安装在北京火车站内。每天都在输送几万人上下楼,已成为必不可少的设施之一。直到80
Escalator, also known as escalator, escalator or escalator. The first escalator in China was installed in Beijing Railway Station in 1960. Transporting tens of thousands of people on and off the stairs everyday has become one of the essential facilities. Until 80