retractable structures

基本解釋

Planar multi-angulated beams are commonly used in retractable structures.
平面折梁?jiǎn)卧强砷_(kāi)啟結(jié)構(gòu)中的常用單元類型。
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Retractable structures have been widely adopted in large-sized palaestra and multipurpose buildings.
開(kāi)合結(jié)構(gòu)在大型體育館、多用途體育場(chǎng)得到廣泛應(yīng)用。
These typical realized retractable roof buildings provide us with great references to further research. The research of retractable roof structures is only at the beginning in China.
目前我國(guó)對(duì)開(kāi)合結(jié)構(gòu)的研究還處于起步階段，國(guó)內(nèi)已建成的數(shù)座小跨度開(kāi)合屋蓋建筑結(jié)構(gòu)形式和開(kāi)合機(jī)理較為簡(jiǎn)單，相應(yīng)的有參考價(jià)值的工程資料也很有限。