一阶

The new model is a first-order ordinary differential equation group for the fluid pressure in the cylinder...

该方程是关于液缸内液体压力、泵阀升程与泵阀运动速度的一阶常微分方程组。

Theorem(Stokes's Theorem) Let be a piecewise smooth oriented curve in three-space, be a piecewise smooth oriented surface with boundary curve .The surface and the curve are related by a right-hand relationship, i.e., if the fingers of the right hand are cupped in the direction of ,then the thumbpoints in the direction of orientation of .,, have continuous first partial derivatives on and ,then

定理 设为分段光滑的空间有向闭曲线，是以为边界的分片光滑的有向曲面，的正向与的侧符合右手规则(即如果右手大拇指表示曲面的方向，则弯曲四指表示曲线的方向)，函数，，在曲面上具有一阶连续偏导数，则有下述公式成立

Finally we consider the half-linear neutral delay dynamic equation A comparison result for the oscillation between the equation and a first order delay dynamical inequality is established.

在本章最后，考虑半线性中立型时滞动力方程建立了方程的振动性与一个一阶时滞动力不等式振动性的比较结果，在此基础上，给出了方程所有解振动的几个充分条件。

After analyzing and evaluating the related references, a rapid algorithm working out control points of uniform cubic B-spline is proposed, and is realized in Matlab, the complexity of program is greatly reduced and the operation efficiency is improved.

在Matlab中编程实现，大大降低了程序的复杂性和提高了运算效率，并使重构所得曲线的两个端点处曲率不为零，至少满足了一阶连续。

A direct two-notrump overcall of a suit one-bid shows either a weakish or a very strong hand with length in the two lowest unbid suits.

对一阶花色开叫直接插叫2NT为弱牌或非常强的牌，且持有两门较低的未叫花色。

Badvancer's redouble of either the penalty double of a simple overcall of a one-bid or the double of a two-notrump overcall of a weak two-bid.

b对一阶开叫做简单争叫被惩罚加倍或对弱二开叫做2NT争叫被惩罚加倍时之回答人的再加倍。

Furthermore, the paper puts forward a successful trial solution to solve the partial differential equation for that necessary conditions.

公式，提出了求解该一阶条件中的偏微分方程的成功率较高的试探求解法。

The result of the research on children's learning profile was found that the observation record that derived from teaching process and interview analysis that got from two text-based tests. The students who are high and intermediate achievers can make first-order and second-order conditions on four-type regular problems by means of discussion and presentation in class. In addition, they can solve problems utilizing "perceptibility" when doing two text-based tests.

研究结果显示，藉由教学过程的观察记录及两次施测后的访谈分析所获得的学童学习历程观之：高成就及中成就组学童藉由讨论与发表，在四种型态问题皆能展现出察觉规律的一阶至二阶层次能力，并能在两次施测时运用察觉能力成功解题。

From the result analysis we can find the activities, discussion and presentation, can inspire children thinking and increase their awareness. We can get better result from intermediate achievers. Besides, the perceptibility of low achievers can achieve steady first-order condition after discussing and testing in class, meanwhile, they can utilize the perceptibility in second-order condition.

其中发现，讨论与发表活动确能激发儿童思考、增进察觉，而以中成就组学童最能展现；另外，低成就组学童的察觉能力则由教学讨论和教学后测验的基础层次提升到延后测较稳固的一阶层次，也渐能使用二阶层次察觉能力。

In this paper,by means of the iterative analysis method,the existence for periodic solution of first-order differential equations is considered.

利用迭代分析方法讨论了一类一阶微分方程周期解的存在性，并得到一些新的结果。

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。