A secant is defined as line passing through two points of the curve.
割线的定义是一条通过曲线上两点的直线。
By piecewise polynomials and the Ramberg-Osgood three-parameter equation fitting the stress-strain curve, the expressions of the tangent and secant modulus are derived.
分别介绍了用分段多项式和朗培其一奥斯古特三参数方程拟合应力应变曲线并求切线模量和割线模量的方法。
It is reasonable to fit the relation curve between secant-modulus difference and pressure by using exponential form.
割线模量差与初始含水量的关系曲线按指数形式进行拟合比较合理。
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