查询词典 first order

The results show that the photolysis of phenazone is a pseudo first order reaction, and no dependence on pH is observed for the process.

结果表明，安替比林的光降解遵循拟一级反应动力学规律，pH值变化对光解速率基本没有影响。

To achieve better than first-order accuracy in Godunov method, a piecewise linear function instead of a piecewise constant function is used along the line between the centroids of two neighbored cells.

为了提高Godunov算法的求解精度，本文将相邻两个三角形单元重心连线上的参数分布看作是分段线性函数，线性函数的坡度取决于网格单元内参数分布的梯度在插值方向的投影。

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〓。

If not,'it would be the first order of business when' Mr. Obama takes office, Mr. Podesta said.

他说，如果计划未获通过的话，这将成为奥巴马执政之后的首要任务。

This OCVC problem was converted to a typical two-point boundary-value problem according to Pontryagin maximum value principle, and this TPBVP was a first order optimality condition which could be solved by Radau collocation method.

根据Pontryagin极大值原理建立该协调电压控制问题的1阶最优性条件，该条件是一个典型的两点边值问题。在此基础上采用拉道排列法求解这个两点边值问题。

These cycles plus two first-order cycles in the Phanerozoic successions have disclosed that a genetic link may be postulated for individual Earth shells and galactic precessional cycles.The stratigraphic records of the above-mentioned cycles are significant especially for the division of the Precambrian strata with lower stratigraphic resolutions.

尽管对地层记录中隶属不同级别沉积层序的间断面所代表的间断时限的绝对年限还难以精确估价，而建立在岩相及相序基础之上的旋回性地层记录的研究，是从复杂而不完整的地层记录中寻找出更多规律性的有效途径，特别是对生物地层分辨率不高的前寒武纪地层，尤其显得更加重要。

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。

This has led some people who design the specification mechanisms for programming languages, or in the case of UML, for modeling languages, to include facilities from first-order predicate calculus as a language extension.

这就促使一些人在编程语言的描述机制和建模语言处理机制中加进了部分一阶谓词演算的东西，作为一种功能扩展。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。