查询词典 mathematic

Therefore, DAE is a common mathematic tool to describe the structure-preserving power system models.

因此，微分代数系统是描述电力系统结构保留模型的一般数学工具。

In order to analyze the influence of filled metal particles on impact force for hydraulic pile hammer, analytical solution of mathematic model for pile hammer filled with metal particles considering effects of metal particles was presented. In the solution, lumped mass were used as metal particles, a spring was used as contact stiffness between metal particles and hammer body, different variable lumped masses were used as pile hammer, the ram and anvil, a spring and a dashpot were used as the anvil cushion and pile respectively.

为分析填充金属颗粒对打桩锤锤击力的影响，考虑填充金属颗粒的作用，用集中质量块表示填充的金属颗粒，用弹簧模拟金属颗粒与锤体相碰处的接触刚度，用不同的集中质量块表示桩锤、砧座和桩帽，用并联的弹簧、阻尼器表示锤垫，用弹簧表示桩垫，用阻尼器表示桩，建立了平衡方程。

The dissertation firstly studies the deoxidizing mechanism of the deaerator and sets up a mathematic model based on conservation of mass and conservation of energy.

为改善除氧系统所存在的鲁棒性差等缺点，提高系统的稳定性，本文对智能控制技术及其在除氧系统中的应用及相关技术进行了研究。

The traditional GIS system can only use mathematic method to describe and explain the confirmed programs but the power of making space decision and solving the uncertain programs are very weakly.

但是，传统的地理信息系统解决问题的方法和模式基本上都是以数学方法为基础建立的，所能解决的有关地理问题也主要是那些能够用数学方法描述和解释的具有确定性解的问题，在解决空间规划决策中有很大的不足。

So we say that we can absolutely avoid unnecessary and bothering process in mathematic deducibility if making full use of the method of Pseudo-spectral in more complex viscoelastic media, we can get wave equation when directly replacing with two kinds of relaxation modules.

由此可以说，如果采用伪谱法模拟其它更复杂的粘弹介质模型时，完全可以避免不必要的而且烦杂的数学推导过程；直接将体积松弛模量和剪切松弛模量代入即可得其波动方程。

Mathematic and logic depend extensively on the deductive method of reasoning .

数学和逻辑学广泛地依靠推理的演绎方法。

Matapopulation is an important frontier in the recent research of mathematic biology, theoretical ecology and conservation biology. The research provides new theoretic bases for the investigation of populations and species which are in severe danger, and makes forecasts and measurement for the populations\' damage due to global habitat destruction and environment deteriorism.

集合种群是当今国际数学生态学、理论生态学和保护生物学的一个主要研究前沿，其研究为濒危物种及种群的研究提供了新颖的理论依据，也为全球范围内的环境恶化和生境破坏对物种造成的伤害做出预测和度量。

Aiming at the dentate boundary problem which is brought by the traditional Cartesian method, Part 4 introduces the diagonal Cartesian method to improve the former 2-D flow mathematic model.

第四部分针对笛卡尔坐标方法处理复杂边界存在的锯齿状问题，引进斜对角笛卡尔方法，对已有的蓄滞洪区二维水流数学模型进行了改进。

At the same time, the thermal mathematic model of working-fluid—water condenser is established and the steady diathermancy program is worked out in a allusion to the mini-type Shell-and-Tube condenser.

同时从热交换器换热理论出发，建立了表征工质-水冷凝器传热数学模型，针对小型壳管式冷凝器编制了稳态传热仿真程序，利用该仿真程序分析讨论了工质R11和冷却水入口温度和流量对冷凝器传热性能的影响。

Consequently the diathermancy was strengthened, the effect of heat transfer was improved and the flow and combustion process in the boiler has become much better. First, in this thesis the burn characteristic of the rubbish and the process of combustion in the chain boiler has been studied. A series of mathematic model has been given. This thesis carefully introduced the principle and formula of the turbulent flow model、two-equation model、radiation model、dispersed phase model and standard wall function method. The software FLUENT has been applied to simulate the temperature、pressure、velocity and mass fraction of species in the boiler furnace and stokehole. The analysis and the comparison have been done. The calculation results indicate agreement with the fact and the studies both here and abroad.

首先，本文针对SZL10-1.25-MJ造纸垃圾焚烧锅炉，结合其燃料的特性，对垃圾的燃烧特性以及层燃炉中垃圾的焚烧过程进行分析；给出一套完整的垃圾锅炉炉内传热数学模型，并分别详细阐述了湍流流动模型、双方程模型、辐射传热模型、离散相模型及标准壁面函数的原理及计算公式；借助于Fluent软件平台对炉膛内的温度场、速度场、组分浓度场及炉膛出口的温度分布、速度分布、组分浓度分布等进行数值模拟，分别从定性和定量的角度与实际情况进行了比较，得到了较满意的结果；模拟结果与国内外的很多研究能较好符合。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。