查询词典 R.R.

The esso essien and high R and R, the heat and 320 220 chemical stability is good.

埃索埃士高 R 220 和 R 320 的热和化学稳定性都好。

Thirdly, on the base of the existent error estimate of elliptical Galerkin projection operator, obtain semi-discrete and complete-discrete error estimates betwent EFG solution and exact solution of parabolic partial differential equation. Semi-discrete error estimate show that the rank of r is accordance with the approximation rank of subspace S_h. Complete-discrete error estimates show that it not only have relation with radius r of domain of influence, but also have relation with the step length of time variable and the way of discrete.Lastly, give typical examples and draw up procedures of MATLAB.

再次，在"椭圆Galerkin投影"算子的误差估计的基础上，对用EFG法解抛物型偏微分方程的EFG解与精确解之间作了半离散和全离散的误差估计，半离散的误差估计表明所给出的误差界限关于r的阶是与子空间S_h的逼近阶相一致的，全离散的误差估计表明所产生的误差不但与影响域半径r有关，而且与离散时间变量的步长τ及其离散方式有关。

The weak signal characteristics of the capacitors of PYZT ferroelectric thin films are investigated. It is found that when the PYZT thin film deposited on Pt/RuO2 is rapidly thermal-annealed at 800℃, an almost ideal microstructure of extended PYZT can be acquired, of which, the εr decreases with the increasing of the rapid temperature (εr is about 150 when annealed at 800 ℃).6 refs.

研究发现，沉积在Pt/RuO2底电极上的PYZT薄膜经800℃快速热处理具有较接近理想外延PYZT薄膜结构，而且εr随着快速热处理温度升高而减小，在800℃快速热处理条件下其εr约为150。

A ring R is called right co-semihereditary if every finitely cogenerated factor module of a finitely cogenerated injective right R-module is injective.

如果有限余生成内射右R-模的有限余生成商模是内射的，则R称为右余半遗传的。

A ring R is called right co-coherent if every finitely cogenerated factor module of a finitely cogenerated injective right R-module is finitely corelated.

如果有限余生成内射右R-模的有限余生成商模是有限余相关的，则R称为右余凝聚的。

We present concrete mathematical expressions concerning relationships of P, I, J and R, a sufficient and necessary condition of J = 0, and relationships among transitivity, negative transitivity, semitransitivity, Ferrers properties between R and P and I with W as the t-norm.

主要包括P，I，J，R之间关系的具体表现、J=φ的充要条件，在W_φ意义下，R的传递性、负传递性、半传递性、Ferrers性质与P，I的相关性质之间的联系，得到了与普通情形下相平行的一些结果。

It is clear that for any graph G the space R and R are homeomorphic.

显然，对任意一个图G，空间 R和空间 R是同胚的。

For the timelike surfaces with constant positive Gaussian curvature (K=1) in R〓, we construct the correspondence between R〓 and sl (2, R), and deduce the fundamental equations for a special choice of the velocity of motion of time-like surfaces in asymptotic coordinates under suitable conditions, meanwhile, we give the B〓cklund transformation and one soliton solution of the evolution equations, then in terms of a gauge transformation we obtain the explict expression of the motion of surfaces.

对于三维Minkowski空间R〓中具有正常高斯曲率（K=1）的类时曲面，取定特定速度，在以渐近线作为坐标曲线的情况下，曲面运动满足两个基本方程，即sinh-Gordon方程和θ随时间演化的方程（其中θ表示两条渐近线之间的夹角），同时给出两个基本方程的B〓cklund变换和单孤子解，并通过规范变换给出相应的正常高斯曲率曲面的显式表达式。

It is found that the R-matrix only permits anAbelian 〓continuous gauge transformation and the energy spectrum isgange invariant whereas the eigenvectors and eigenvalues of transfer matrix as wellas the Bethe ansatz equations are explicitly gauge dependent.

我们发现所得量子R-矩阵不具有〓离散对称性，这种对称性可被认为对模型的R-矩阵及Lax算符施加了一种附加约束，一旦去掉这种对称性，我们就可以得到对含有化学势一维Hubbard模型一种自然描述的量子R-矩阵。

But the ruled surfaces in R^3 or R(superscript 3 subscript 1) have vanishing Gauss curvature if and only if they are developable.

这与低维情形绝然不同，在R^3或R(上标 3 下标 1)中只有当直纹面是可展时，高斯曲率才为0。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。