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He proved that:if the total moving times of mesh M is a finite number and independent ofΔt andh.the L2-norm error estimate is optimal;if Mh is independent ofΔt and bounded,energy norm error estimate is optimal.

并证明了当网格变动次数M是不依赖于Δt和h的有限数时，近似解与真解的L2误差估计是最优的；当Mh不依赖于Δt且有界时，能量模误差估计最优。

It is proved that a left R-module P is pure projective if and only if for any pure epimorphism E→M→0, where E is pure injective, Hom→Hom→0 is exact.

证明了左R-模P是纯投射的当且仅当对任意纯满射E→M→0，其中E是纯内射的，Hom→Hom→0是正合的。

A partial linear method is used to deal with non homogeneous nonlinear equation of heat conduction.

当激光波长λ=1 0 6 μm、功率密度i0 =70 0W /cm2 ，预热温度T0=5 2 3K时，经过 0 7秒，表面温度度升到 12 90K左右，再结晶厚度约为 0 5 μm

M.C. Escher is a great modern Dutch printer, and his works are outstanding for their artistic combination of ration and imagination and of science and art, which is closely related to his study on mathematical methods, especially the principles of symmetry in geometry.

荷兰现代版画家M.C。埃舍尔的作品兼备理性与幻想、融合了科学与艺术的双重特性，这与他坚持不懈的对数学方法，特别是几何方法中对称原理的研究有着内在联系。

Service times have an exponential distribution with a mean of 1/m.

服务时间服从均值为1/m 的指数分布

We found that the permeability ratio and GMI ratio depend on external magnetic field, peaking at a transverse anisotropic field of H=0.4 kA/m.

并发现有效磁导率比随外磁场的变化，在各向异性场H≈0.4kA/m处出现了峰值，GMI效应也在此磁场的位置处出现峰值。

A R-C system with foci of 2 m and f-number F/4 was taken for an example, the principles of stray light eliminating and evalutiong in reflective optical system was put forward. Lens hood in the main mirror, lens hood outside and window shade, lens hood in the secondly mirror were designed by CAD modeling.

以焦距为2 m，相对孔径为1/4的R-C系统为例，介绍了利用计算机仿真技术进行消杂散光设计和评价的原理，结合CAD建模进行了主镜内遮光罩、外遮光筒、次镜百叶窗式遮光罩的设计。

Imaginary of M. Lapshin pictures involves us in a magic world where majestic gods, splendid nymphs and beautiful fairies live. The artist hymns Eternal Feminity. The general theme of the artist's creative activity is the image of Eternal femininity.

通过M。 Lapshin的想像，我们被带领进入梦幻的世界，圣经故事及古代神话都是艺术家的创作灵感，壮丽的神像，美轮美奂的女神都展现著神圣一面。

This paper used anhydrite associated with ferruginous mineral from Cheng Chao iron ore as primary raw material to develop successfully a new type of light wall material under the action of G N M J four compound excitation system and FX compound reinforcing fibre with suitable forming procedure.

本研究以武钢矿业公司程潮铁矿共生的硬石膏为主要原料，在广泛探索的基础上，筛选出G－N－M－J四元复合激发体系，有效地激发了硬石膏的活性，在FX复合纤维的增强作用下，采用合适的成型工艺条件，成功地研制出一种新型的轻质墙体材料—纸面硬石膏板，对试制样品的测试结果表明，各项性能达到或接近以半水石膏为主要原料的纸面石膏板的国家标准，为综合利用程潮铁矿的矿物资源开辟了新的途径，对硬石膏在新型建筑材料领域中的开发应用，更有着开拓性的意义。

Then, in a transverse magnetic field, the bed expansion behavior, liquid-phase mixing characteristics and dynamic protein adsorption in the MSFB of the magnetic affinity adsorbent (mean size 153 mm, density 1.073 g/ml) made of agarose was studied.

在横向磁场中研究了平均粒径为153 m m 、密度为1.073 g/ml 的琼脂糖磁性粒子的磁稳流化床的膨胀规律、混合特性和蛋白质吸附行为。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。