查询词典 mathematic

This paper tries to describe the similarity between Internetenterprise to be valuated and enterprise refering to in precision mathematic language, and analyze the main factors scientifically.

试图用精确的数学语言来描述待评估网络企业与参照企业的相似程度，又能对各主要因素权重做出科学分析。

The ghesis also analyzes and designs vectored nozzle control system. It makes mathematic model of a typical airplane system become suitable to the study of IFFPCS.

改进之后的飞机系统模型适应综合控制系统的研究，它是火力／飞行／推进综合控制系统原理和结构分析的基础。

Firstly,based on the WR Sexton method,the method and mathematic models of supplementing the sub-idle rotating component characteristics is presented.Secondly,the turbofan windmilling high-low pressure rotor co-working equations and the whole engine co-working equations are established.lastly,a turbofan engine windmilling characteristics under various windmilling conditions are simulated and analyzed.

首先，基于不可压流理论，附以可压缩效应修正的指数法发展了补充慢车转速以下部件特性的计算模型和计算程序；其次，根据流量连续、压力平衡、功率平衡、燃烧室进出口总温相等及转速相等等约束条件建立了风车状态时涡扇发动机高低压转子及整机的共同工作方程；最后发展了具有一定计算精度的涡扇发动机风车状态特性计算模型和程序，并以某型涡扇发动机为例，计算分析了不同飞行条件下发动机的风车特性，从计算结果看，其趋势是合理的。

The mechanism of instability wrinkling in the process based on minimum energy principle is revealed, uniform mathematic description of the wrinkling wave on the strip of in-plane bending is established, the internal and external energy is deduced by energy method, and a uniform criteria of internal and external wrinkling is established; then how to combine the criteria with the FEM simulation system to make the numerical prediction of wrinkling into reality is also resolved in the paper. The effects of the forming parameters on the deforming result are analyzed by the uniform predict criteria. The results show as follows: as the compress width increase, external wrinkling first come into being, then internal winkling do, and finally in-plane bend occur; the loading wedge angle increase, internal winkling first come into being, thenin-plane bend do, and finally external wrinkling occur; in-plane bend is possible to occur with a increase of the strain-hardening exponent and the strength coefficient; and the effect of the friction factor may be ignored.

2揭示了板带不均匀压下面内弯曲成形过程基于能量原理的失稳起皱机理，提出了统一的描述内外缘起皱波形的函数，采用变分法推导了服从该波形函数的内外缘起皱能，建立了统一的起皱预测准则；将新建立的统一的起皱预测准则引入到数值模拟系统IBS中，数值预测结果与实验结果的吻合较好；分析了成形过程各参数对起皱的影响规律：随着接触变形区宽度的逐渐增大，先是发生外缘起皱，然后发生内缘起皱，进而才出现稳定成形；随着实际加载楔角的增大，先是发生内缘起皱，然后发生稳定成形，进而出现外缘起皱；硬化指数和强化系数增大，易于稳定成形；摩擦因子对起皱的影响不明显；而且接触变形区宽度对起皱的影响最大。

In this paper, based on a linear mathematic model a new method in measuring phased array antenna quickly is described.

本文研究了一种对相控阵天线特性进行快速测量的新方法。

The general mathematic model for analyzing the hydrogenerator with the internal armature winding faults is established by using the multi loop theory in this paper.

应用多回路理论建立水轮发电机定子绕组内部故障分析的通用数学模型，引入回路关联矩阵减少回路方程总数并自动形成各种故障形式的回路参数，对水轮发电机定子绕组内部故障的稳态性能进行仿真计算，探讨了水轮发电机定子绕组内部故障（如匝间短路、支路间短路等）规律。

ICA is receiving increasing attention in EEG signal processing for its mathematic model is similar with each other.

因为脑电问题比较接近独立分量分析的模型，它在脑电信号处理中的应用潜力正逐步受到关注。

Finally, the index of non-probabilistic reliability is introduced in mathematic model of optimization design, and optimizations of axle shaft structure of machine tool and hollow conveying shaft based on non-probabilistic reliability model are presented. The engineering examples show that the presented methods are convenient and effective.

最后，将机械的非概率可靠性指标引入到优化设计的数学模型中，分别对空心传动轴和机床主轴结构进行了可靠性优化设计，通过工程实例说明了该方法是简便和有效的。

According to the results of the analysis and the experiment,the mathematic model of the ball mill load-controlapparatus was established and its sample was successfully designed.

根据多次试验和分析结果，建立了球磨机负荷控制系统的数学模型，也完成了其样机的设计。

Based on the analyses of the flow and sediment characteristics and evolution trend of the river bed of the Fuling reach in the Yangtze River before and after the impoundment of the Three Gorges Reservoir, the water level, velocity variation and influenced range in the Fuling reach before and fifty years after the operation of the Three Gorges Reservoir with the construction of the Fuling dock and four discharge combinations are calculated by using a two-dimensional flow mathematic model.

摘要在分析长江涪陵段的水沙特性和三峡水库蓄水前后该河段河床演变趋势的基础上，运用二维水流数学模型，分析了4种流量组合情况下在三峡水库运用前和运用50年，涪陵港区码头修建前后的水位、流速变化及其影响范围。

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。