作用组合值 combination value of actions 当结构或构件承受两种或两种以上可变作用时，设计时考虑和作用最不利值同时产生的折减概率，所采用的一种可变作用代表值。
另一种特殊情况是cumulate方法，该方法根据指定的组合操作用累积值替换每个元素。
Another special case is the cumulate method, which replaces each element with a running accumulation according to a specified combination operation.
用解析方法计算了受静水外压载荷作用的有环壳过渡段的锥—柱组合壳中的应力值，并用瑞利法计算了其失稳临界载荷。
Stresses in cone cylinder shells with toroidal transition inserted are investigated by an analytical method, and buckling pressures for the shells are presented by Rayleigh Ritzs method.
组合模式的实部绝对值可反映组合模式持续时间的长短，其值小，则组合模式作用时间长。
The real part of combined mode shows its effective time: the smaller its absolute value is, the longer the effective time will be.
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