一阶

For polydisperse systems at large Péclet number, we establish the systems of differential equations describing the leading term and the second term of the pairdistribution function via regular perturbation method.

针对高Péclet数情形，通过正则扰动法我们建立了决定对分布函数的微扰展开的主导项和一阶项的联立方程组，并用由此算出的对分布函数的数值解计算了系统的沉降系数。

The stability and bifurcation of the equilibrium states of the rod are analysed by using the singularity theory of phase plane.

在两端受力矩单独作用的条件下，杆的平衡微分方程可转换为用欧拉角表述的一阶自治系统，并有可能利用相平面的奇点理论分析弹性细杆平衡状态的稳定性。

Taking advantageof the correspondence between self-adjoint pseudo-differential operator and real-valuedWeyl symbol of its own,we obtain that the critical phase volume charactertistic for thenon-localness of uncertainty principle is the first-order term of h and the higher-orderones of h are all omitted,where h is the Planck constant.

利用拟微分算子和实值的Weyl象征的对应关系，我们得到"测不准"的关键值是h的一阶项，其余项为〓。

The experimental results show that the affine model works best in the test area. The accuracy can reach to 0.6~0.8 m in planimetry and about 1.0 m in elevation based on the affine model by using 5~6 well distributed control points.

实验结果表明，在该区域使用一阶仿射变换模型进行补偿，在5~6个均匀分布的控制点支持下，即可达到0.6~0.8m的平面精度和1.0m左右的高程精度。

Objective: To establish a simple rapid method for determining Kjeldahl nitrogen content by 1st order differential coefficient single sweep polarography.

建立用一阶导数单扫描极谱法测定食品中凯氏氮含量的简单、快速的方法。

This kind of assertion seems to require special language extensions and has led people to suggest introducing first-order predicate calculus.

这种情况下的断言似乎就需要实现特定的语言扩展，于是一些人建议引入一阶谓词演算。

The event calculus is a theory for reasoning about action based on first-order predicate calculus.

事件演算是基于一阶谓词演算的行动推理理论。

Also, first-order predicate calculus isn't good enough anyway.

同时，从各方面来说，一阶谓词演算都不是足够好。

After this, American Logician Kurt Godel proved the completeness theory of predicate calculus. This means the completion of the base of Modern Logic.

之后，美籍逻辑学家歌德尔一阶谓词演算的完备性定理，这标志着现代逻辑基础部分的完成。

So anything that you may want to express on a complex object that would seem to require first-order predicate calculus can be expressed actually quite nicely within the confines of the programming language.

所以对于一个复杂对象，任何看起来需要一阶谓词演算才能描述的东西，实际都可以在编程语言范畴内实现十分精细地表述。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。