Second-order equation [数] 二阶方程
pseudo-second-order equation 假二级方程式
nonlinear second-order equation 非线性二阶方程
second-order differential equation [数] 二阶微分方程 ; 二阶微分方程式 ; 微分方程 ; 二次微分方程
second order difference equation 二阶差分方程
And experiments proved that the reaction rules of isocyanate and water could be described by the second order equation.
实验证明室温下异氰酸酯与水的反应可以使用准二级方程描述。
The fitting results indicated that the first order equation and the second order equation were more accurate and could replace other kinetics equations.
结果表明：一级动力学方程和二级动力学方程比其他动力学方程更准确，能够代替其他动力学方程。
It's a second-order equation in x, and is a parabola and a parabola has this shape.
这是一个x的二次方程，也是一个抛物线方程式,抛物线都长这样。
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