查询词典 first order

The main contents of this course include: the elementary solution of first order differential equations, the theory of existence, uniqueness and continuity dependency of initial value problem of first order differential equations, the structure theory of higher order linear differential equation and the solution of constant coefficient equations, the structure theory of system of linear equations, basic solution matrix and the solution of system of constant coefficient equations.

本课程内容有：一阶微分方程初等解法，一阶微分方程初值问题的存在性、唯一性、连续依赖性理论，高阶线性微分方程解的结构理论和常系数方程解法，线性方程组的结构理论、基解矩阵和常系数方程组的解法。

Using difference method, the first-order and the second-order differential equations of fractional derivative can become the first-order ordinary differential equation, and the high precision direct integration can be used for the solution.

所论方法首先引入差分格式，将含有分数阶导数的一阶和二阶微分方程变为一阶的常微分方程，然后再用精细积分方法逐步积分进行求解。

First of all,we have given some of the basic concepts of differential equations, described the constant coefficient linear ordinary differential equation solution, for a class of second-order variable coefficient linear ordinary differential equation initial value problem, an approximate solution, the method is first unknown function of a definition for N sub-interval, and then in between each district within a constant coefficient ordinary differential equations similar to the replacement, the solution has been the problem as similar to the original analytical solution, and then gives a detailed second-order change order coefficient of linear homogeneous ordinary differential equation solution examples, the examples of the approximate method proposed in this paper is valid.

首先给出了微分方程的一些基本概念，讲述了常系数线性常微分方程的解法，针对一类二阶变系数线性常微分方程初值问题，提出了一个近似解法，本方法是先对未知函数的一个定义区间作N等分，然后在每一个小区间内用一个常系数常微分方程近似替换，所得到的解作为原问题的近似解析解，随后详细给出了一个求二阶变系数齐次线性常微分方程的解的实例，该实例说明本文提出的近似方法是有效的。

This time the universal time is on August 1, 2999 in the afternoon 2.15 minutes, Huang Qu senior official yellow Jinlong, already led his interplanetary flight group to compel always to raid the planetoid rapidly, in order to arrive personally the first front not to disrupt the whole plan deployment, he the 12th group's jointure of command for vice-group leader Commander Ms. Diana, then, led several guard starship, the acceleration to rush immediately the first interspace group nearby air zone, in order to nearby examine the special details, and prepared to land ahead of time this planetoid, in order to could direct other interspace group debarkation immediately and launch fast pulls out the spatial planetoid the ultimate fight.

此时世界时间是2999年8月1日下午2点15分，黄区长官黄金龙，已经率领着他的星际飞行小组急速逼向来袭小行星，为了亲临第一前线而不打乱整体计划部署，他把第十二小组的指挥权移交给副组长指挥官黛安娜女士，然后，立即带领几架近卫星际飞行器，加速赶到第一星际小组附近的空域，以便就近查看一下具体情况，并准备先期登陆这颗小行星，以便能够即时指挥其他星际小组登陆并快速展开掏空小行星的终极战斗。

Based on Fermat's theorem, the law of reflection and refraction is obtained, and the geometrical ray tracing method of reflected light is introduced. In response to geometric optics rainbow theory and Airy rainbow theory, the relationship formula of the N-order rainbow angle with the refraction index and the Airy peak value position formula are derived, and the physics causation of the first order rainbow are discussed and analyzed in detail. The distribution properties of the first and second order Airy structures of spherical particles are calculated.

利用费马原理推导了反射和折射定律，以反射射线的跟踪为例介绍了几何光学射线跟踪方法的推导过程；根据几何光学彩虹理论和Airy理论，推导了N阶几何光学彩虹角与入射角和折射率的关系及Airy峰的位置表达式，详细阐述了一阶彩虹形成的物理原因，计算了球形粒子的一、二阶Airy分布。

When we received a large amount of order of the same item, we will 'order and ship' by 'first-come, first-serve' basis. When all available orders are shipped for same item, it may take up to additional 20-30 days before we receive next shipments. Sometimes our suppliers can also be out-of-stock (this rarely happens, but it can!) in further hindering the ship time of products. If you cannot and not willing to accept this type of sales, please do not order and not to cause any further confusions!!

如果我们的货单很多，我们将会依照汇款或下标顺序出货，所以只有最早汇款的几位贵客可以马上收到货，现货寄完其余的贵客就必须等追加约20-30天，才能到货，甚至也有可能出现厂商临时出状况而追加失败的情形(这种情况比较少，但还是有可能发生)，所以请可以接受以上状况和愿意等的贵客再下标，无法接受请千万不要下标，以免造成交易上的误会与不愉快喔！！

Part Three The study of Lattice-valued Modal First-order Logic System and Its Resolution Principle In this part, we introduced quantifiers and predicate into LMP, put up lattice-valued modal first-order logic system LMF, and gave its semantic interpretation and syntax structure, proved soundness theorem and consistence theorem. Moreover, in order to judge the satisfiability of formula, defined Skolem standard type and H-interpretation. Based on these work, made a primary discussion of a - resolution principle based on LMF.

第三部分：关于格值模态一阶逻辑系统及其归结原理的研究第n页西南交通大学博士研究生学位论文这一部分主要是在格值模态命题逻辑系统LMP队）中引进量词和谓词，建立格值模态一阶逻辑系统LMF（广并给出其语又解释和语法结构，证明了系统的可靠性和协调性；另外，为了判断公式的可满足性，定义了格值模态一阶公式的 Skolem标准型和体解释；在此基础上，对基于系统LMF的a一归结原理进行了初步探讨。

The reaction kinetics of polyurethane formation and that of trimerization of isocyanate in a system of polyisocyanurate modified by urethane were studied by FTIR. The results show that the two competing reactions occurred and progressed simultaneously, and the trimerization was found to be first order, and the polyurethane formation was first order with respect to the isocyanate concentration and zero order with respect to the polyol concentration.

采用傅里叶快速红外光谱技术研究了氨酯改性聚异氰脲酸酯反应体系中氨酯、聚异氰脲酸酯生成的反应动力学，结果表明，在该反应体系中，氨酯反应和异氰酸酯的三聚反应是同步发生并同步进行的，其中三聚反应是一级反应；氨酯对异氰酸酯是一级反应，对聚醚二元醇为0级反应。

6 First Division: In the first place then I say that the primary division of essential order appears to be that of an equivocal term into its equivocates, namely into the order of eminence and the order of dependence.

1.6 第一种分类：首先，我认为对本质秩序的初始分类似乎是把一个模棱两可的概念进行模棱两可的划分，即划分为卓越的秩序与依附的秩序。

The above problems are studied in this thesis. First, the implicit NND scheme with mix flux splitting method proposed by Zhang Hanxin that is first order accurate in time and second order in space is modified. The modified scheme keeps the characteristics of fast convergence and is second order accurate both in time and space. It can be capable of simulating the unsteacly flow. Second, the topological method founded by Zhang Hanxin is improved to study the characteristics of vortex near the singular point on its axis and the cross streamlines on the longitudinal section passing the vortex axis. On the basis of topological results, a program which visualises numerical results is made out. It can help us analyse the characteristics of vortex motion.

本文对上述问题做了研究：第一，在数值模拟方面，借助于张涵信提出的NND算法和混合通量法，我们将他建立的时间为一阶、空间为二阶精度的快速隐式算法推广为时间和空间均为二阶精度的算法，这样做保留了原格式收敛快的特点，而且能适用于真实的非定常流态的计算；第二，将张涵信的拓扑分析方法加以推广，研究了涡轴附近及破裂点邻域内流场的空间特征，并以这些拓扑分析结果为指导，研制了一套显示计算结果的软件，这一软件能很好地帮助我们分析流场的计算结果和旋涡演变的特征。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。