形状比 meaning in English

aspect ratio

For deriving the formula of the concrete filled steel tube short column subjected to axial compress we use the forth strength principle that is the shape energy ratio principle and get the formula when the steel gets into plastic stage
在推导钢管混凝土轴心受压短柱承载力公式时，论文利用第四强度理论(即形状比能理论)推导出钢管进入塑性状态时的应力公式和三向应力状态下混凝土的破坏准则公式。