查询词典 formula translator

The college physics teaching materials have only studied a little magnetic induc tion on the axis of the roun d electric current,have not provided the formula of calculating to the magnetic induction that the round on e is inside a bit more wanton, after Biot-Savart law of trees formula can draw w anton magnetic induction expression formula of intensity a bit inside the round electric current.

大学物理教材中只研究了圆形电流轴线上一点的磁感应强度 B ，而对圆面内任意一点的磁感应强度 B却未给出计算公式。本文运用毕奥—萨伐尔定律及西普森公式，计算出了圆形电流面内任意一点磁感应强度的表达

At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.

其中，主要进行了以下几方面的工作：针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响，而非声波在空气中传播的速度，本文利用能量守恒原理，对其进行了修正；考虑到管内气体流速对压力波速的影响，对原始的负压波定位公式进行了一定程度的改进，并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法，提高了系统的定位精度；利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理；并利用小波变换技术对信号奇异点的快速、准确的识别能力，对经上述消噪后的负压波信号进行了奇异点捕捉，精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度，从而进一步提高了定位的精度；考虑到小波变换是一种基波可变的信号分析工具，也就是说，不同的小波基波对信号分析的结果将有很大差别，这势必影响最终的处理结果，因此，我们又对比分析了本课题中小波基及尺度的选择问题，依据规则性系数相似性原理对母小波的选择进行了探索性研究；最后，还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。

The soundness and completeness theorem of this method were proved at last. This part consists of the following points: 1. The properties of the indecomposable extremely simple form of LP were discussed, the theorem shown that every logical formula of LP was equals of a generalized conjunction normal form. 2. The method for judging a logical formula is a indecomposable extremely simple form or not was discussed, the necessary and sufficient conditions of a logical formula with not more than three implicative connective being a indecomposable extremely simple form was given. 3. The α-resolution fields of the indecomposable extremely simple form of LP were discussed, some elementary results were obtained. 4. The automated reasoning method based on the resolution principle of classical logic was discussed, the author given a method to describe the set of clauses by using a matrix, and translated the resolution of two clauses to column operations of this matrix.

二、关于格值命题逻辑系统LP中α-自动推理方法的研究 1、对LP中不可分极简式的性质进行了研究，证明了LP中任何一个格值逻辑公式等值于一个广义合取范式； 2、对LP中不可分极简式的判定方法进行了研究，讨论了含有不超过3个蕴涵运算的格值逻辑式为不可分极简式的充分必要条件； 3、对LP中不可分极简式的α-归结域进行了研究，得到了一些基本结果； 4、对经典逻辑中基于归结原理的自动推理方法进行了研究，给出了用符号矩阵表示子句集合的一种方法，把不同的归结过程转换成矩阵的列变换。

Firstly, a computational formula of RS which used widely in pipelines design is introduced. Secondly, a correction formula is deduced based on Spangler model. Thirdly, a model of buried pipelines is analyzed with finite element program. After compared with different results, it is found that the result from the correction formula matches with the result of FE better than that of the design code.

以现行的管道结构设计规范为例介绍了目前管道工程设计中常用的管土相对刚度计算公式，在Spangler管道土压力模型基础上推导了计算埋地管道管土相对刚度的修正公式，并采用有限元模型分析了上埋式管道的管土相互作用机理。

In this paper the conformal transformation method is used to get the inferential reasoning formulas: seepage pressure formula, seepage discharge formula and seepage gradient formula.

本文采用保角变换的方法，通过建立数学模型推导出在均质且理想边界条件下，土石坝基垂直防渗的渗透压力、渗流量和出逸坡降计算公式。

Then the finite element software ANSYS is used to simulate the orthotropic flattened Brazilian disc specimen subjected to diametrical compression, the accuracy of the approximate formula of compression displacement is checked. The formula is further modified with a semi-empirical and semi-analytical approach, and it is shown to have better accuracy than the original formula covering the whole range of orthotropic anisotropic index of rock, the error is less than 6%.

用有限元分析软件ANSYS模拟正交异性岩石的巴西圆盘试样的对径压缩实验；利用有限元分析结果对正交异性平台位移压缩公式进行精度检验，并用半经验半解析的方法，对该公式进行局部的修改，修改后的公式在岩石材料的正交异性指数的整个范围的总体评价上，误差小于6%，具有更好的计算精度。

The emphases of the article are the formula region search, the sign of formula division, the positional information of sign record, the sign of formula recognition and so on.

本文重点研究了汉字文章中公式区域的查找、公式中字符的分割以及其位置信息的记录、公式中字符的识别等。

In this research, we try to find a more practical formula for calculating the impact force of boulders. We infer an academic formula from the elastic collision theory. Then, in the experiments, we simulate the impact by debris flow with mixed diameters in order to correct the result formula. We hope we can provide a reference for future slit dam design and debris flow prevention.

本研究目的为利用弹性体碰撞理论，推求出巨砾冲击力之理论式为基础，藉由实验方式，以混合粒径模拟土石流撞击梳子坝，来修正推算出之冲击力理论式，求得一个更符合实际撞击情形之巨砾冲击力计算式，期能对尔后梳子坝设计及土石流灾害防治问题，提供一设计之参考。

When using relative number or average number to get averaging, you may use denominator or numerator of this relative number or average number as weight number to weigh the relative number or average number,and use frequency formula or weighted harmonic mean formula of weighted arithmetic mean formula to get its mean value.

在由相对数或平均数求平均数时，可以以这一相对数或平均数的分母或分子为权数，对这一相对数或平均数进行加权，利用加权算数平均数的频数公式或加权调和平均数公式求其平均值。

On the basis of the analysis of several typical accidents in the operation of well cementing, different factors of cement slurry affecting the operating safety of well cementing are presented, which include the uniformity of formula materials in laboratory and on the spot, the homogeneity of mixed formula, the quality of oil well cement and additional agents, and the formula design of cement slurry.

沈伟，影响固井作业安全的水泥浆因素及其标准化工作对策从分析几个典型的固井作业事故事例出发，指出了影响固井作业安全的各种水泥浆因素，具体包括实验室与现场配方材料的一致性问题、混配均匀性问题、油井水泥及外加剂材质问题及水泥浆配方设计问题。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。