Retractable structures have been widely adopted in large-sized palaestra and multipurpose buildings.
开合结构在大型体育馆、多用途体育场得到广泛应用。
Based on analyses about the structures and existing problems of integrally retractable alternative cutting element bits, a integrally rotary replacing cutting element bit was proposed.
在分析各国整体切削具不提钻可换式钻头结构及存在主要问题的基础上，提出采用整体旋转切削具可换式钻头。
Now, few articles refer to construction record, so this paper is great value in construction of retractable roof structures.
针对目前工程施工记录文献缺乏的现状，可对今后开合屋盖结构的施工提供成功经验。
The movement of retractable roof makes the design of retractable roof structures very complex.
由于屋面可以移动，使得整个结构的设计与常规建筑相差很大，十分复杂。
The movement of retractable roof makes the design of retractable roof structures very complex.
由于屋面可以移动，使得整个结构的设计与常规建筑相差很大，十分复杂。
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