查询词典 operator equation

Using Maxwell equation, Stoke' s law and penetration wave and reflected wave basic theory, research compound materials particle size, proportion of mixture and preview length and others.

再取混合后的粉末，将三种不同重量比的混合粉末与环氧树脂依重量百分率浓度5 wt%、10 wt%、15 wt%和20 wt%混合均匀成四种浓度的试片。我们归纳发现复合材料在粒径变化、混合比例、试片长度等…。

But due to the compressibility of gas significantly higher than fluid, the state equation of gas is different from fluid.

但由于气体的可压缩性明显大于液体，因而气体的状态方程与液体完全不同。

The numerical simulation is based on the fundamental hydrodynamic conservation equations including viscous effects for compressible fluid, coupled with the equation of state for water.

数值计算是基于包括粘性影响的可压缩流体基本守恒方程，并耦合了水的状态方程。

The adaptive physical model on Coutte Flow based on a motional coordinate is presented,and a solution of a equation for velocity, temperature and rate of heat transfer of a viscous compressible fluid is obtained.

在基于动坐标系的库特剪切流的物理模型上，提出了两平板间可压缩粘性流体的温度，流速与热流速率间的关联式。

In order to improve the performance of aerostatic bearing and enhance the reliability of system, the chief works of this paper represents as follows: First, on the foundation of development and present research situation of internal and external aerostatic bearings, this paper summarizes the principle of aerostatic bearing, according to several assumptions of work conditions, two-dimensional Reynolds equation of isotherm compressible fluid is deduced.

为改善气体轴承的性能，提高气浮轴承转子系统的安全性、可靠性，本文进行了如下研究工作：首先，本文在综述了国内、外气体静压轴承的发展历史和研究现状的基础上对气体静压轴承基本原理进行了概述，根据小孔节流静压气浮轴承的工作状况，作了若干假设，在此基础上导出了描述气膜压力场的二维可压缩Reynolds方程。

Comparison between Rayleigh-Taylor instability growth rates of compressible and incompressible fluid was made, with the state equation of compressible fluid in an arbitrary function form of density and pressure.

对比研究了可压缩与不可压缩流体的Rayleigh-Taylor不稳定性小扰动阶段的增长速率，其中，压力是密度的任意单值函数，这个函数也即是可压缩流体的状态方程。

Firstly, an overview is given on the wave equation issue, its solution, along with the historical and present studies of computability theory.

随着计算机科学的快速发展，应用计算机来给出非线性偏微分方程的解析近似解在理论上已成为可能。

Nonlinear wave system; Exact solution; Approximate solution; Soliton; Riccati equation method; Turing machine; Computable function

非线性波系统；精确解；近似解；孤立波； Riccati方程方法；图灵机；可计算函数

MVFK8vP7Ge+Uu0 Nonlinear wave system; Exact solution; Approximate solution; Soliton; Riccati equation method; Turing machine; Computable function

非线性波系统；精确解；近似解；孤立波； Riccati方程方法；图灵机；可计算函数

The other is called Householder transformation method, in which the matrix of inconsistent equation group is orthogonalized and triangulated using Householder transformation, and then the Zernike coefficients can be worked out by using a backsubstitution technique. It is proposed for the first time. Being a method that can avoid the computational error effectively and can be easily performed, it has proven to be a feasible and efficacious algorithm.

特别是第二种方法由本文第一次提出，它避免了构造法方程组，从而避免了以前的方法因构造的法方程组出现严重病态而引入的计算误差，并且易於编程，因而是一种比较理想的实现Zernike多项式拟合的算法。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。