envelope of curves 曲线的包络 ; 外包 ; 曲线的包线
envelope of strain curves 应变曲线的包线
envelope of family of curves [数] 曲线族的包络
This paper discussed an elementary solution to the envelope of a kind of family of curves of which the equation was one of the cubic equations in regard to a parameter.
本文论述曲线族的方程为关于参数的三次方程时,其包络曲线方程的初等求法。
Concrete stress-strain curves under cyclic loads include not only envelope curve, but also unloading and re-loading curves.
混凝土的反复加载应力-应变曲线不仅包括骨架曲线,还包括卸载及再加载曲线。
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