四维的

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

By using the pseudo 3-D fKdV equation and division of four regions, theoretical mean wave resistance s and time change rates of the regional mean energy of the precursor soliton generation in a straight channel with arbitrary section are given theoretically.

利用准三维的fKdV方程和四区间划分法，理论给出了任意截面的直渠道中先锋孤立子生成的理论平均波阻和区间平均能量的时间变化率。

Aiming at the low efficiency and laggard running of domestic double extraction turbine, flow passage is modified with four-dimensional technology,then the output has been increased,coal cost has been reduced,and also hidden safety trouble of unit has been removed,in the end,the safe and economical operation capacity of the unit has been improve

针对国产200 MW双抽供热汽轮机效率低、安全运行水平落后的状况，采用全四维技术对通流部分进行改造，提高了机组的出力，降低了机组的煤耗，消除了机组中存在的安全隐患，提高了机组安全经济运行的能力。

Armageddon is part of the third/fourth-dimensional reality; however, if your energy signature is of a higher, more balanced frequency, none of the disruptive energies of change will affect you personally.

哈米吉多顿（世界末日善恶对决的战场）是第三/第四维实相的一部分；然而，如果你们的能量信号为一个更高，更加平衡的频率，没有破坏性能量的变化将亲自影响到你们。

Norwegians, as I discovered during a four-day hiking expedition to the wind-swept Hardangervidda National Park a few summers ago, embrace the outdoors with an almost reverential fervor.

挪威人，就我几年前的夏天去大风肆虐的哈当葛维达国家公园远足四天的发现，以一种近乎让人敬畏的热情拥抱户外。

The main aims of this disseration are to extend the complex self-dual grav-itational theory-the Ashtekar theory in four dimensional spacetime and este-bhsh a parametric self-dual gravitational theory in order to solve the problemof reality conditions in the Ashtekar theory.

本文的主要目的是推广四维时空的复自对偶引力理论-阿西特卡理论，建立一个参数化的自对偶引力理论，进而解决阿西特卡理论中面临的至关重要的实性条件问题。

By taking the strategy of uniting geometry with algebra and using the method of minimal value, the relationships of intersection, parallels and perpendicular between two three dimensional spaces in four-dimensional descriptive geometry are investigated and the calculation formula of the distance between two three-dimensional spaces are given.

用形数结合的观点和条件极值法，研究了四维空间的两三维空间的相交、平行和垂直的相互关系计算出两平行三维空间的距离。

Other attractions include the Haunted House of Ebenezer Scrooge a Pepper's ghost effect,a Victorian school room, a 4D high definition cinema show,"The Six Jolly Fellowship Porters", a themed bar and restaurant, and Fagin's Den, a play area.

其他景点有吝啬鬼埃比尼泽·斯克鲁奇的鬼屋，一个维多利亚时代的教室，一个高清四维影院——&码头工的聚集地&，一个主题酒吧和餐馆，一个游戏区——&费金的老窝&。

Other attractions include the Haunted House of Ebenezer Scrooge a Pepper's ghost effect, a Victorian school room, a 4D high definition cinema show,"The Six Jolly Fellowship Porters", a themed bar and restaurant, and Fagin's Den, a play area.

其他景点有吝啬鬼埃比尼泽的鬼屋，一个维多利亚时代的教室，一个高清四维影院，&码头工的聚集地&，一个主题酒吧和餐馆，一个游戏区--&费金的老窝&。

I make a new black texture with "rust" shader in the material palette of Cinema 4D, I give it a high valve of specular and I mix it with the texture of the shell to create a greasy atmosphere and spots just under the engine.

我提出一个新的黑色纹理与&锈&着色，在材料的调色盘四维电影院，我给它一个高阀的镜面和我的组合，它与纹理的壳，以创造一个油腻的气氛和景点只是根据引擎。

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。