ascending stage meaning in English

上升阶段

3 . a space bond slip relation of reinforcements in either end of a member is proposed , based on one - dimensional bond slip model of reinforcements proposed by teng zhiniirmg from tsinghua university , the first - time loaded ascending stage ? curve of which model is modified as the line which parameters are not changed so as to simply the computation . the bond , slip is regarded as the boundary nonlinearity of a member
3 、采用清华大学滕智明建议的一维钢筋粘结滑移恢复力模型，但从简化计算的角度出发，将首次加载的上升段曲线改为直线，并假定构件端部的诸多纵向钢筋的滑移服从平截面假定，考虑由节点锚固区粘结滑移引起的构件端截面轴向和两转角附加变形。