The normalized form of shear modulus vs. strain amplitude will be shown by a single curve, and that of damping ratio vs. strain amplitude by a family of curves or a band zone with shrunk ends.
经归一化后，前者在平面上表示为单一的一根曲线，后者则表现为一簇曲线或两端是尖灭、。
According to the equation of asymptotic curves, a family of nonlinear asymptotic curves are given to the principal normal surface.
根据渐近曲线的方程，具体给出主法线曲面的一族非直线的渐近曲线。
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。
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