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Proposed a new method of determining the cell thickness and the twist angle of twisted nematic liquid crystal cells, a quarter-wave plate was inserted between the liquid crystal cell and the analyzer, a stepper motor rotated the Retarder by , and measured the light intensity of every modulated point, solved the stokes parameters of polarization light exiting from the liquid crystal cell using Fourier analysis method, thereby determining the cell thickness and the twist angle.

本文提出了一种测量扭曲向列相液晶盒盒厚与扭曲角的新方法,在液晶盒和检偏器之间放置四分之一波片,通过旋转此四分之一波片,测量各个调制点的光强,用傅里叶分析法计算线偏振光穿过液晶盒后的stokes矢量,从而求出液晶盒盒厚以及扭曲角。

The degree of twist distortion increases with pretilt angle.

同一种液晶分子在取向层的预倾角不同,在力场作用下扭曲变形的程度亦不同,预倾角较大可获得较大的扭曲角;对于不同的向列液晶,弹性常数较小的液晶可在较短的时间产生较大的扭曲变形

The regulation of gene expression is to have relations to the assembly of the DNA binding proteins which bind to DNA to initiate the transcription. Some of these proteins have the ability to promote bending or looping of DNA. The FIS protein regulates gene expression in Escherichia coli by this property of bending DNA. There are many researches to discover the mechanism of FIS protein binds to DNA. However the experiment data only show the supposititious results and figure out the model of FIS-DNA complex structure. This research uses molecular dynamics simulation to compute the detail of the interaction between FIS and DNA. We observed FIS prominently affects the DNA bending by the type of local bending. Analyzing the DNA structure properties, roll and slide, also demonstrates the local bending type and region. The hydrogen bonds between FIS and DNA are analyzed to compare with the experiment data. Finally we compute the binding free energy between FIS and DNA to estimate the result of simulation and compare with the value of λ-repressor-DNA complex.

基因的表现与结合於DNA促使DNA转录作用起始的DNA结合蛋白组装有关,一些这类的蛋白质具有促使DNA扭曲或将DNA形成环状的能力,FIS蛋白质即是藉由扭曲DNA的特性调控大肠杆菌基因的表现,目前已有很多的研究发现FIS与DNA结合的机转,然而这些实验的数据仅能显示推测性的结果,进而利用这些结果推论出FIS与DNA聚合体结构的模型,本研究利用分子动态模拟的方式计算FIS与DNA交互作用的细节,我们观察到FIS主要影响DNA的扭曲方式为DNA区域扭曲的类型,并且分析DNA结构特性roll与slide也指出扭曲方式为区域扭曲与其扭曲的区域,我们也分析FIS与DNA之间的氢键,并且与实验的资料作比较,最后我们计算FIS与DNA之间的结合自由能评估模拟的结果,并且计算出的值和λ-repressor与DNA聚合体结构的实验值作比较。

The head loss coefficient of down inlet linear transition is less than tortile transition and those above of outlet almost same.

设计流量下进口直线扭曲面型渐变段的水头损失系数小于反弯扭曲面型渐变段的水头损失系数,出口直线扭曲面型渐变段的水头损失系数与反弯扭曲面型渐变段的水头损失系数基本相同。

Methyl Sartortuoate and Methyl isosartortuoate are two tetracyclic tetraterpenoids isolated from the sarcophyton tortuosum tixier-durivalt by Chinese scientists. Biogenetically, it could be regarded as a Diels-Alder combination of two cembrenoids, i.

扭曲肉芝甲酯和异扭曲肉芝甲酯是中国科学家从南中国海扭曲肉芝软珊瑚中分离到的一种四环四萜化合物,从生源角度考虑,可能由两个西松烷型二萜化合物经Diels-Alder反应组装而成。

The crystal structures have been determined by single-crystal X-ray diffraction.Cadmium atoms in compounds 1 and 2 show an eight-coordinated distorted square-antiprismatic geometry and a seven-coordinated distorted pentagonal bipyramidal geometryrespectively. Copper atoms in compounds 3 and 4 show a six-coordinated distorted threeprismatic geometry and a four-coordinated distorted tetrahedral geometry respectively.

所有配合物的晶体结构都通过单晶X-射线衍射确定:配合物1中的镉离子周围显示八配位的扭曲四方反棱柱构型;而配合物2中的镉离子周围显示七配位的扭曲五角双锥构型;配合物3中的铜离子周围显示六配位的扭曲三棱柱构型;配合物4中的铜离子周围显示四配位的扭曲四面体构型;配合物5中的锌离子周围显示六配位的扭曲八面体构型。

To the liquid-crystal display from its structure, the principle as well as the classification has carried on the introduction, twists to the row (TN-Twisted Nematic); Ultra distortion to row (STN-Super TN); Double-decked ultra distortion to row (DSTN-Dual Scan Tortuosity Nomograph); The thin film crystal (TFT-Thin Film Transistor), introduced the thin film crystal liquid-crystal display with emphasis.

对液晶显示器从其结构,原理以及分类进行了介绍,扭曲向列型(TN-Twisted Nematic);超扭曲向列型(STN-Super TN);双层超扭曲向列型(DSTN-Dual Scan Tortuosity Nomograph);薄膜晶体管型(TFT-Thin Film Transistor),重点介绍了薄膜晶体管型液晶显示器。

His mad contorted smile; writhed lips; my writhen features- Walter scott.

他病态的扭曲的微笑;被扭曲的嘴唇;我扭曲的性格-沃尔特。

Experimental results indicate that the B/A value greatly affects the internal Nusselt number and friction factor of the twisted tube because the parameters decrease with the increase of B/A and S/d values, more rapidly with the former, and that the Nusselt number and friction factor of the twisted oblate tube increase respectively by 30%~150% and 20%~50%, as compared with those of the smooth tube at the same Reynolds number and Prandtl number.

实验结果表明:高扭曲比螺旋扁管的管内努塞尔数和阻力系数均随B/A值和S/d值的增大而减小,但随B/A值的增加而减小得更快,B/A值对高扭曲比螺旋扁管的管内传热与流阻性能影响更大;在相同雷诺数和普朗特数下,高扭曲比螺旋扁管管内的努塞尔数为光滑管的1.3~2.5倍;阻力系数为光滑管的1.2~1.5倍。

I sat in the cafe by the cracker factory You were practicing a magic trick And my thoughts got rude, As you talked and chewed On the last of your pick and mix Said your mistaken if your thinking that I haven't been caught cold before As you bit into your strawberry lace And then a flip in your attention in the form of a gobstopper Is all you have left and it was going to waste Your past-times, consisted of the strange And twisted and deranged And I love that little game you had called Crying lightning And how you like to aggravate The ice-cream man on rainy afternoons The next time that I caught my own reflection It was on it's way to meet you Thinking of excuses to postpone You never look like yourself from the side But your profile did not hide The fact you knew I was approaching your throne With folded arms you occupy the bench like toothache Saw them, puff your chest out like you never lost a war And though I try so not to suffer the indignity of a reaction There was no cracks to grasp or gaps to claw And your past-times, consisted of the strange And twisted and deranged And I hate that little game you had called Crying lightning And how you like to aggravate The icky man on rainy afternoons Uninviting But not half as impossible as everyone assumes You are crying lightning Your past-times, consisted of the strange And twisted and deranged And I hate that little game you had called Crying lightning Crying lightning Crying lightning Crying lightning Your past-times, consisted of the strange And twisted and deranged And I hate that little game you had called Crying

我坐在咖啡厅的饼干工厂你练习了魔法把戏和我的想法有粗鲁,当你说话和咀嚼最后你挑选和混合如果你说你的错误思想我一直没感冒了当你咬到你的草莓的花边然后在你的注意力在翻了个大糖球好形式你已经离开,就会浪费你的past-times,组成了奇怪的和扭曲和混乱我爱那小游戏,你打过电话哭闪电您想如何加重男人在雨季的冰淇淋下一次,我抓住了我自己的倒影这是在它的方式来满足你思考的借口拖延你从不看起来像你自己从侧面但你并不隐瞒事实上,你知道我很接近你的宝座上你用双臂占据板凳像牙痛看见他们,像你一样。至终,你的胸扁从来没有输过一场战争虽然我试着不那么受了侮辱没有很好地掌握或空白,爪和你的past-times,组成了奇怪的和扭曲和混乱我讨厌这样的小游戏,你打过电话哭闪电您想如何加重在雨天的下午粪便人并狡滑但是不是每个人都承担一半是不可能的你在哭你的past-times,组成了奇怪的和扭曲和混乱我讨厌这样的小游戏,你打过电话哭闪电哭闪电哭闪电哭闪电你的past-times,组成了奇怪的和扭曲和混乱我讨厌这样的小游戏,你打过电话哭没赏分,你又这么长肯定难找到人答题啊下次记的要+分快给我分吧

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The difference between him and the others forced me to be less partial.

也这是因为这种区别,让我在他和其他孩子之间没有偏爱任何人。

I decided to be frank in rejecting the proposal.

他说,他准备直率地拒绝接受这个建议

One downside: the iPhone doesn't have a built-in slot for a stylus.

不过,还有一个问题:iPhone没有内置的手写笔槽。