1857年3月23日,美国纽约一家楼高五层的商店安装了首部使用奥的斯安全装置的客运升降机。
In March 23, 1857, the United States of New York a five storey shop installed the first use of Otis safety device for passenger lifts.
SS120单柱施工升降机由金属结构、工作机构、电气控制以及安全保护装置等部分组成。
The SS120 column construction lift is composed by metal structure, working mechanism, electrical control and safety protection instrument.
该尖端磁化处理,然后盖升降机的安全,轻松地削减了。
The magnetised tip of the handles then lifts the cut lid safely and easily away.
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