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 ; 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。
The dynamics of leaf area accorded with the curves of second-order equation.
叶面积消长动态符合一元二次方程变化曲线；
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