查询词典 mathematic

An 1-D sediment mathematic model is developed in the second part. Techniques are suggested for some problems in calculations, such as the effective suspended load carrying capacity of the different bed material reach, the coefficient of suspended load carrying capacity, the recovering coefficient of the carrying capacity, the thickness of the mixed layer, the transport width of the bedload, bifurcation and confluence of main and branch channel, and the distribution of deposition and erosion along the cross section, etc. The numerical scheme of 1-D model is induced.

第二部分建立了一维泥沙数学模型，对计算中的几个关键问题提出了处理方法，如不同床沙组成河段的有效挟沙力、挟沙力系数、挟沙力的恢复饱和系数、床面混合层厚度、推移质输移带宽度、干支流入汇及分流问题、横断面冲淤形态及断面修正方法，导出了一维模型的差分格式。

Thirdly, mathematic model of flowing fluid will be established in both radial gap and axial gap, and the pressure distribution laws will also be concluded in these two gaps.Fourthly, pressure distribution drawing will be made in entrance and cover board of pumps and axial gap of balance device.

为了分析新型轴向力平衡装置间隙的内部流动，建立了径向间隙和轴向间隙内部的流动数学模型，并应用粘性不可压缩流体的纳维—斯托克斯方程和流体的连续性方程，推导出了两间隙进出口压力差和泄漏量的关系式，进而得出平衡装置间隙内部的压力分布规律。

This text has designed the hardware and software of the electric control system of computer test board. And choose the control units and design the parameter for it. Especially research the driving motor by frequency converter and mathematic model of the operated brake lever force.

本文对测试系统电气控制系统的硬件和软件进行了设计，并对控制元器件以及控制参数进行设计，特别对电机变频控制以及施加的握闸力进行参数设计控制。

This paper focuses on the methods, results and relating mathematic models of construction ration measurement referring to leader dredge bucket grooving machine and repeting sawing machine wielded on the sites of embankment foundation anti-leakage project.

长江重要堤防工程采用的新技术、新工艺、新材料、新设备层出不穷，本论文就基础防渗工程采用的导杆式抓斗成槽、往复式锯槽等新工法施工定额的测定的方法、成果以及所涉及的数学模型作重点论述。

A mathematic model, which deals with the relationship between maximum temperature of thick plate butt multipass welding and weld heat input, interpass temperature, ambient temperature and the distance of measuring points to heat source center, was founded using multivariant nonlinear regression analysis.

采用多元非线性回归的方法，建立了厚板对接多道焊的最高温度与焊接线能量、层间温度、环境温度以及测点到热源中心的距离之间的数学模型。

A mathematic model,which deals with the relationship between maximum temperature of thick plate butt multipass welding and weld heat input,interpass temperature,ambient temperature and the distance of measuring points to heat source center,was founded using multivariant nonlinear regression analysis.

采用多元非线性回归的方法，建立了厚板对接多道焊的最高温度与焊接线能量、层间温度、环境温度以及测点到热源中心的距离之间的数学模型。通过相关性检验、线性回归的显著性检验以及回归系数的显著性检验，证明了模型可行；同时分析了回归系数与测点到焊缝中心距离之间的关系。结果表明，它们之间的关系是一种非线性关系，而且呈现出了一定的变化趋势

Thus, simplified mathematic model is established on the basis of a, b, c three phase variables.

而且众所周知，电机的数学模型是多变量、强耦合的非线性系统。

In order to reduce the bleaching stage, the two stage bleaching of chlorine dioxide and hydrogen peroxide boosted by an activator was studied in this paper and the sequences were optimized with mathematic model.

本文探讨了蔗渣浆二氧化氯和添加活化剂的H2O2两段漂白，在有效氯用量12kg/t，H2O2用量12kg/t，活化剂A用量1.5kg/t的情况下，D两段漂白可以达到DD三段漂白(有效氯、NaOH和H2O2用量分别为30kg/t、13kg/t和1kg/t)相同的白度和粘度。

Chapter Eight concludes the achievement of this dissertation, and some problems will be answered through more discussions. To sum up, this dissertation argues that Liber Abaci has three kinds of features, i.e., a rich content Mathematic, a variety of mathematics cultural exchange, and the dissemination diversify.

斐波那契注重问题求解，以设计出尽量简单的算法求出解答为目标，利用欧几里得《原本》定理进行几何证明代数方法合理性的过程中，不追求逻辑论证的完美，而是凭藉巧妙的几何图形构造，简化计算过程，从而得到问题的解答。

ANNs are especially accomplished in solving complex nonlinear problems, and none of definite mathematic expressions should be needed.

它特别擅长处理复杂的非线性问题，而且不需要明确的数学表达式。

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。