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An apparatus for having experience of opening drop at construction work
An apparatus for having experience of opening drop at construction work
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机译:一种具有在建筑工作中开口下落的经验的设备
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摘要
The present invention relates to an apparatus for experiencing a falling phenomenon at an opening where there is no base structure at the bottom of a building construction site. More particularly, the present invention relates to an apparatus for opening and closing a pair of upper plates constituting an opening by a single driving means The present invention relates to a fall experience apparatus for a field.;
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