查询词典 mathematical formula

According to the problems that are encountered in designing the mathematical knowledge representation language in NKI (national knowledge infrastructure) and after the discussion of ontological assumptions for mathematical objects, two kinds of formalisms for the representation of mathematical knowledge are provided. One is a description logic in which the range of an attribute can be a formula in some logical language; and another is a first order logic in which an ontology represented by the description logic is a part of the logical language.

根据在设计NKI(national knowledge infrastructure)的数学知识表示语言中遇到的问题，并在讨论了数学对象的本体论假设的基础上提出了两种数学知识的表示方法：一种是以一个逻辑语言上的公式为属性值域的描述逻辑；另一种是以描述逻辑描述的本体为逻辑语言的一部分的一阶逻辑。

In the layout analysis, we chose a bottom-up algorithm based on nearest neighbor connect-strength and line confidence to segment the image area, table area and text area; In the printed Chinese character recognition module, we calculate the degree of incorporative difference to match the character, also define a refusal class which could orientate the mathematical expression automatically; Put the expression into the formula processing module, then we chose the character segmentation method based on connectivity and the template match method to recognize the character in the mathematical expression and at last we used the structure analysis based on the character to transform the two dimension formula into one dimension Word EQ expression.

在版面分析中，采用基于最近邻连接强度和行列可信度的自底向上的版面分析算法，分割出图像区域、表格区域和文本区域；在汉字识别模块中，采用回溯切分方法切分出字符段，计算合并差异度与特征字典比较，通过引入汉字的拒识类，从而实现了公式的定位；将定位后的数学公式送入公式识别器，在公式识别器中采用基于连通域搜索的字符分割方法和模板匹配方法对字符识别，对于识别出的字符，再采用基于特征字符的结构分析方法，从而将二维的数学公式转化为一维的Word EO域语句。

In this paper, Newton iteration formula for computing normal depth and critical depth was put forward by mathematical transformation of uniform flow equation and critical flow equation of circular section tunnel. Then, the relationship between the corresponding central angle and the introduced parameters was analyzed. An approximate formula for angle was obtained according to optimal uniform approximation principle. Using this approximate formula as initial value of iteration formula, a direct formula for calculating normal depth and critical depth of circular section tunnel was established after its first iterative.

该文通过对圆形断面均匀流方程与临界流方程的数学变换，分别得到其正常水深与临界水深的牛顿迭代公式，同时，通过对正常水深与临界水深对应的中心角与引入参数之间关系的分析及数值计算，利用最优一致逼近原理分别得到了正常水深与临界水深对应中心角的近似计算式，并以此近似计算式为初值，用迭代方程进行一次迭代得到了圆形断面均匀流水深与临界流水深的直接计算公式。

The bubble pattern on the exterior was derived by mathematical formula from the structure of soap bubbles.

外立面的水泡状设计，是根据肥皂泡的结构，运用数学公式演算出来的。

Tongueless knowledge calls write from memory of "" of " recessive knowledge again " of knowledge of the concealed inside meeting knowledge "", those who point to is: Cannot or can use the knowledge that other perhaps form states verbal, character, icon and mathematical formula not completely.

缄默知识又称为"隐性知识""默会知识""内隐知识"等，指的是：不能或不完全能用言语、文字、图标和数学公式或者其他形式表述的知识。

So good, again discard PS and FW, we begin to take FLASH to make a plan from the tool of the belt, OK, after understanding deep again, discover a lot of animation can use very simple geometry and mathematical formula to come true.

那么好了，再次屏弃PS和FW，我们开始拿起FLASH自带的工具做图，OK，再次深入了解以后发现很多动画可以用非常简单的几何和数学公式实现。

The determination of AHT value mathematical formula is one of the mo-st important problems during the design of three dimensional software packagfor directionally drilled well.

在研究定向井三维设计软件包时，软件设计程序要满足全方位的扭转中的一个重要问题就是如何确定最终方位角AHT值数学表达式；本文针对定向井在全方位扭转条件下扭转后最终方位角的变化规律进行深入研究。

The job involves their bear the palm to cause economics layman normally to those people the mathematical formula of drab or spoffish gasp in admiration making a person undertakes accurate classification.

他们的获奖工作涉及对那些通常引起经济学门外汉们乏味或大惊小怪的令人叹服的数学公式进行精确的分类。

The researchers created a mathematical formula to calculate the degree of smoking compensation in reducers compared with light smokers.

研究人员建立了一种数学公式，以计算吸烟量减少的重度吸烟者相对于轻度吸烟者的吸烟代偿程度。

E. textures that are created by a mathematical formula, images, or environment maps to create the impression of reflections and refractions.

这可能是程序纹理即通过数学公式创建的纹理，图片或者环境映射来制造对反射和折射的效果。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。