1.
In other coordinates it will involve second and possibly first derivatives with respect to time.
在别的坐标系中，它除了包含对时间的二阶微商外，还可能会包含对时间的一阶微商。
2.
linear ordinary differential equation of first order
一阶线性常微分方程
3.
The next phase of e-commerce
下一阶段的电子商务，
4.
The Extent of Comparison Theorems of Ordinary Differential Equations to the Higher Order;
一阶常微分方程比较定理的高阶推广
5.
This paper deals with general initial irregular oblique derivative boundary value problem for elliptic parabolic complex equations of second order in a multiply connected cylindric region.
讨论多连通柱体区域上二阶椭圆－物型方程的一般初非正则斜微商边值问题。
6.
The quantum symmetries in field theories for a gauge-invariant system with a higher-order Lagrangian;
场论中高阶微商规范系统的量子对称性质
7.
The jeweller smiled.
珠宝商微笑了一下。
8.
Asymptotic Behavior of Solutions of Certain Higher Differential Equations and Higher Difference Equations;
一类高阶微分方程及高阶差分方程解的渐近性
9.
The Application of the Invariance of First Order Differential Forms in the Differential Calculus for Function of One Variable;
一阶微分的形式不变性在一元微分学中的应用
10.
A little gentle prod may be necessary at this stage
在这一阶段或有必要稍微督促一下
11.
A little gentle prod may is necessary at this stage.
在这一阶段或有必要稍微督促一下。
12.
A little gentle prodding may be necessary at this stage.
在这一阶段或有必要稍微督促一下.
13.
Analytic Solutions of Certain First Order Iterative Functional Differential Equations;
一类一阶迭代泛函微分方程的解析解
14.
Integral Criteria of One Kind of First-order Nonlinear Differantial Equation;
一类一阶非线性微分方程的可积判据
15.
The Solution to a Series of the Order 1 Nonlinear Differential Equations
一类一阶非线性微分方程的求解方法
16.
A Type Which Order Can be Depressed for Second or Third Order Linear Differential Equation with Varied Coefficient
二阶、三阶变系数线性微分方程可降阶的一个类型
17.
The Application of the Invariance of Total Differential Forms in the Differential Calculus for Function of Several Variables;
一阶全微分形式不变性在多元微分学中的应用
18.
The Oscillation of Second Order Half - linear Ordinary Dif ferential Equations
一类二阶半线性常微分方程的振动性