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Lifting device for theatre backdrops, has mechanical lift which can be switched over to manual lift
Lifting device for theatre backdrops, has mechanical lift which can be switched over to manual lift
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机译:用于剧院背景的升降装置,具有机械升降装置,可以切换为手动升降装置
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摘要
At least one mechanical backdrop lift (1) can be switched over to a manual backdrop lift so that the mechanical drive mechanism (2) is shut down and the backdrop is moved manually.
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