多卷的

The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen"s. It was shown that the block part could improve the uniformity of the flow distribution. The analysis of the flow field of some materials with different power-law factor in the die designed by Mckelvey was close to that of Mckelvey"s. It was shown that the flow distribution was uniform in the die that can producesheets with 1200mm in width. During the analysis the flow channel was divided into several parts to get the details about the fluid flow in each area. A conclusion was drawn after analyzing the influence of the die pressure on the flow distribution, that the higher pressure is good for the output and bad for the uniformity of the distribution. Simulation of the die applying the cylindrical main runner showed the fact that when the cylinder replaced the cone the change of uniformity was trivial. The uniformity of the non-block flow channel was so poor that the block in the proper position of the die channel was necessary. The project of the die for the wider sheet was put forth, and the analysis of the fluid flow in the die was shown.

本文模拟了圆柱管缝隙流模型的三维流动场，得到了与Middlemen结论一致的流动均匀性，并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象；分析了多种幂率指数的流体在Mckelvey等人设计的流道模型中的流动分布，得到了与Mckelvey的分析结果接近的压力降和流量偏差；本文建立了1200mm幅宽机头流道的三维有限元模型，并逐个分析各个区域和多个截面的流动分布状况，由此揭示了1200mm幅宽L-型机头流道内的流北京化工大学硕士学位论文动分布基本均匀，并在分析了机头压力对于挤出流动分布的影响后得出结论：较高的机头压力可以获得较大的产量，但是不利于物料均匀分布；模拟了采用圆柱管主流道时机头流道内的流动分布，得出结论：主流道由圆锥管改为圆柱管时对流动均匀性影响不大，通过设置适当的阻尼仍然可以达到挤出平衡；模拟了两端进料式圆柱管无阻尼流道的流动均匀性后得到结论：两端进料式无阻尼结构的流动均匀性较差，宽机头中仍然有必要设置阻尼块；确定宽幅机头流道的基本方案，并设计了一种宽幅防水卷材挤出机头流道的结构，通过流动模拟表明该种结构的流动均匀性较好；考察了宽幅机头对于不同厚度片材的挤出适应性，得到结论：当生产不同厚度的片材时，阻尼块高度需要调整。

First, based on the measurements of absorption cross-section, the absorption characters of the main polluted gases in flue gas were deeply studied, and found that SO_2、 NO、 NO_2、 NH_3 had a character of approximate periods absorption at some wave band, which is a good chance of a new measurement introduced. Secondly, the factors about absorption cross-section of the gases measured, which affect on the measurement precision of DOAS, is studied deeply. The influence of pressure and temperature on absorption cross-section was given special research, and the compensated measures were given to the gases based on the character of the gases. Thirdly, in practical measurement, it must have been satisfied that the monochromator was consisted with the reference spectrum, which was based on absorption cross-section. In order to satisfy the consistency, the technique of reversion in the image was introduced, the reversions of spectrums were realized with wiener filter and noise elimination based on wavelet transform.

首先从吸收截面的测量入手，对烟气中主要的污染气体SO_2、NO、NO_2、NH_3的吸收特性进行详细研究，发现这些气体在局部区域具有准周期吸收特征，这为引入新的测量方法提供了契机；其次，对决定DOAS测量精度的被测气体吸收截面的诸多问题进行了深入研究，重点研究了压力、温度对被测气体吸收截面的影响，并针对被测气体的特征提出了相应的修正措施；再次，在实际测量中，要求所使用的光谱仪必须与以吸收截面为基础的参考光谱相匹配，为了满足匹配这一条件，文中将图像复原技术引入到光谱复原，使用维纳滤波和小波消噪实现了光谱的复原，将复原后的光谱与所使用光谱仪的仪器函数卷积，即可实现；最后，在对DOAS测量原理详细分析的基础上，对传统的最小二乘—差分吸收光谱法进行了详细的阐述，通过实验证实两点：1。

One Wild Night It's a hot night, the natives are restless We're sweating by the light of the moon There's a voodoo mojo brewing at the go-go That could knock a witch off her broom We slither on in and shed our skin Make our way into the bump and the grind So I'm passing by, she gives me the eye So I stop to give her a light Chorus: One wild night One wild night (24 hours of midnight) One wild night (I stepped into the twilight zone And she left my heart with vertigo) One wild, one wild, one wild, one wild night Havin' as much fun as you can in your clothes Margarita had me feelin' alright It just might be that I found religion I've been on my knees for half of the night Then I'm rolling the bones with Jimmy 'no dice' Gonna take him for a couple weeks' pay Man, if you lose this roll I take your girlfriend home So I stopped But you're not gonna believe who comes walking out Chorus: One wild night One wild night (24 hours of midnight) One wild night (I stepped into the twilight zone And she left my heart with vertigo) One wild night (hey, c'est la vie) One wild night One wild night (life is for the living so You gotta live it up, come on let's go) One wild, one wild, one wild, one wild night Guitar solo Chorus: One wild night One wild night (24 hours of midnight) One wild night (I stepped into the twilight zone And she left my heart with vertigo) One wild night (hey, c'est la vie) One wild night One wild night (life if for the living so You gotta live it up, come on let's go) One wild, one wild, one wild, one.. One wild night One wild night (24 hours of midnight) One wild night (I stepped into the twilight zone) For one wild night One wild night (hey,c'est la vie) One wild night One wild night All we've got is one wild night One wild night (4x) One wild night blinded by the moonlight One wild night 24 hours of midnight One wild night stepped into the twilight zone for One wild, one wild, one wild, one wild night.

一狂放的夜它是热的夜，当地人是不安定的由那里月亮的光冒汗是巫毒教mojo酿造在可能敲巫婆她的笤帚的去去的我们我们滑行并且流洒我们的皮肤做我们的方式成爆沸和研磨，因此我通过，她给我眼睛，因此我停下来给她轻的合唱：一狂放的夜一狂放的夜(24个小时午夜)一狂放的夜(我跨步入暮色区域和她左我的心脏以眩晕)一狂放，一狂放，一狂放，一狂放的夜 Havin同样多乐趣，象您在您的衣裳玛格丽塔酒能有我feelin它也许行是我发现了我是在我的膝盖为夜的一半的宗教我然后滚动骨头与吉米'没有模子' 去采取他为几星期的薪水人，如果您丢失我采取您的女朋友家的这卷，因此我停止了，但您不相信谁来走出去 Chorus： One wild night One wild night (24 hours of midnight) One wild night (I stepped into the twilight zone And she left my heart with vertigo) One wild night (hey， c'est la vie) One wild night One wild night (life is for the living so You gotta live it up， come on let's go) One wild， one wild， one wild， one wild night Guitar solo Chorus：一狂放的夜一狂放的夜(24个小时午夜)一狂放的夜(我跨步入暮色区域和她左我的心脏以眩晕)一狂放的夜(嘿， c'est la竞争)一狂放的夜一狂放的夜(生活，如果为生活，因此您得到居住它，进展我们是)一狂放，一个狂放，一个狂放，一个一狂放的夜一狂放的夜(24个小时午夜)一狂放的夜为一狂放夜一个狂放的夜(嘿， c'est la竞争)一狂放的夜一狂放的夜我们有的全部是一狂放的夜一狂放的夜(4x)一狂放的夜由月光蒙蔽了一狂放的夜24个小时午夜狂放的夜跨步入暮色区域为一狂放的一，一狂放，一狂放，一狂放的夜。

In order to develop and modify Gregory scheme for cumulus convective parameterization,we make the improvement as follows:(1) The large-scale moisture convergence is taken into account and the organized inflow,which occurs in the area of large-scale moisture convergence and is directly proportional to it, is added to turbulent airflow.(2) The influence on saturation vapor pressure exerted by supercooled water is taken into account and the initial mass flux is adjusted. Based on diagnosis of the air heating and moistening, the downdraft airflow is adjusted.(3) Based on the character of our country heavy rainfall,which usually occurs in the mixed cloud consisted of stratocumulus and cumulus, the process of excessive convection is restrained by organized outflow in the top of cloud and improving downdraft current and by reducing the evaporation of rainfall and release of latent heat.

为了改进和发展Gregory积云参数化方案，(1)考虑了大尺度水汽辐合对积云对流的影响，即在混合卷入中加入有组织的卷入，让有组织的卷入存在于有大尺度水汽辐合的层次上，并且与大尺度水汽辐合直接成比例；(2)考虑了过冷水存在对饱和比湿的影响，调整了初始的质量通量，并且根据对大气加热加湿的诊断，调整了大气向下拖曳的强度；(3)根据我国降水多由层状云和嵌入其中的对流云混合产生的这一特点，对于过强对流过程进行抑制，在云顶加入有组织的卷出，同时加大向下拖曳的强度，减少蒸发以降低潜热的释放，抑制过强对流的发生。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。