科研之友
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摘要
<正>China’s lift industry has developed rapidly since the 1980 s. By 2020, the annual output of lifts was up to 1.1 million and over 8 million lifts were under service. The lift market in China grows fastest in the world. The safe operation of lif ts attracts increasing attention from the society, since lifts have become a necessity in cities due to rapid social and economic progress.
