Axisymmetric elasticity problem of cubic quasicrystal is reduced to a solution of a partial differential equation with higher-order by introducing displacement function.
本文通过引入位移函数使得立方准晶的轴对称弹性问题化为求解一高阶偏微分方程。
Partial differential
英语例句库
原声例句
经济学人-科技
(The chapter on non-linear partial differential equations, to be precise.)
准确地讲是非线性偏微分方程。
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You know, it was the old quantum mechanics, solving partial differential equations.
你知道，这是旧的量子力学，求解偏微分方程。
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The pitfalls of a pseudo-mathematical method, which can make no progress except by making everything a function of a single variable and assuming that all the partial differentials vanish, could not be better illustrated.
伪数学方法的缺陷无法得到更好的说明，除非将所有事物都作为单个变量的函数并假设所有偏微分都消失，否则它不会取得任何进展。
中文百科
偏导数 Partial derivative
（重定向自Partial differential）
在数学中，一个多变量的函数的偏导数是它关于其中一个变量的导数，而保持其他变量恒定（相对于全导数，在其中所有变量都允许变化）。偏导数在矢量分析和微分几何中是很有用的。
函数
关于变量
的偏导数写为
或
。偏导数符号
是圆体字母，区别于全导数符号的正体
。 这个符号是阿德里安-马里·勒让德引入的并在雅可比的重新引入后得到普遍接受。
英语百科
Partial derivative 偏导数
（重定向自Partial differential）
In mathematics, a partial derivative of a function of several variables is its derivative with respect to one of those variables, with the others held constant (as opposed to the total derivative, in which all variables are allowed to vary). Partial derivatives are used in vector calculus and differential geometry.
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