定积分

This article employs the method of element changing in definite integral to spread the dimension formula of plane figures .

利用定积分的换元法，推广了平面图形的面积公

The fundamental solutions for the orthotropic shallow shells are presented in the form of a definite integral.

以定积分表示的形式提出了计入剪切变形的正交各向异性扁壳的基本解。

The creation of the concept of the definite integral was motivated by the problem of calculating the areas of certain plane regions.

定积分概念的产生是由求一个平面域的面积问题而导致的。

In informal but descriptive language ,we say that the definite integral preserves inequalities.

如果在区间上，，则用通俗明了的话说，就是定积分保持不等号。

A definite integral is an in definite integral evaluated over an interval.

定积分是区间上的不定积分值。

Definite integral ; method of calculation ; technique

定积分；计算方法；技巧

Based on random simulation method, discussed the method of calculating definite integral using Visual Basic for Applications programs with Excel software.

讨论了基于随机模拟方法在Excel中用VBA通用应用程序脚本编程语言计算定积分的问题，通过一个应用实例说明了该方法的有效性。

A definite integral is an indefinite integral evaluated over an interval.

定积分是区间上的不定积分值。

The author makes an initial discussion on how to clarify the origin and theoretical basis of infinitesimal method during the teaching of this very method in the application of definite integral.

针对在定积分应用的微元法教学过程中，就如何阐明微元法的来源、理论依据以及在实际应用中需注意的问题等进行初步的探讨。

This text will talk about some new methods about the limit of disjunction function in the boundary and the operation of lead number and definite integral.

分段函数是函数问题中难点，本文就分段函数在分界点的极限，导数、定积分的运算问题探讨一些新方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了