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以电动葫芦为动力装置的简易升降机造价低廉,使用方便,但缺少明确的设计安装标准。
Simple elevator with electric hoist as power unit features low cost and ease of operation.
youdao
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以电动葫芦为动力装置的简易升降机造价低廉,使用方便,但缺少明确的设计安装标准。
Simple elevator with electric hoist as power unit features low cost and ease of operation.
youdao