微分造句

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1.
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用拉普拉斯变换式对微分方程进行变换，把输出和输入联系起来，得到脉冲响应与系统输入输出之间的对等关系。

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2.
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对三维波动方程做单程波分解，给出了用低阶偏微分方程组逼近上行波方程的2种高阶近似表达式。

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3.
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, 本文首先介绍了地下水在岩土层中的渗流要遵循渗流运动方程和连续性方程，在此基础上得到了稳定渗流的微分方程式。

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4.
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阶梯梁静力和动力问题的传统解法是分离变量后分阶梯写出常微分方程并分别求解，不胜其烦。

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5.
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边际分析法是选择最优化决策的一种基本定量方法，与微分学中的导数密切相关。