在水中的

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

A mathematical model of the semibatch foam fractionation of surfactants was developed. Foam bed is assumed to consist of equal dodecahedral bubbles at any cross section.

本文建立了间歇式泡沫分离水中表面活性剂的模型，假设所有气泡均为正十二面体，在塔的每一截面上，泡沫半径均一。

The drag force depends on the density or thickness of the fluid; for example, moving through air is easier than moving through water.

拖拽力的值取决于液体的密度和粘稠度；例如在空气中移动一个物体要比在水中移动一个物体要容易的多。

With the investigation of the domestic and foreign literature systematically, the bases on the domestic and foreign present research and the comprehensive utilizations of the various knowledge of fluid mechanics in porous medium, reservoir engineering, mathematical physics, perforation completion, numerical simulation and so on, this article takes numerical simulation of gas reservoir of water solubility as the research aim which has completed following research works and obtained the corresponding research results: it analyzes the nature of the Water-soluble gas and formation water as well as the influent factors of the solubility through the study of massive materials; It establishes mathematical models three-dimension, the dual medium, the gas-water phase through the way of finite difference in the migration of water-soluble gas, which describes the entire process of release, migration and production in formation, where it considered the problems of variable bubble point; According to the numerical models of gas reservoir of water solubility it provides solution procedure that based on black oil model; It discovers that there will obtain the good effects in the lowly speed of development through simulation; the reinjection of formation water may largely enhance the produce degree of water-soluble gas when we consider reinjection in simulator; It considered the influence of perforated completion on development so as to increase the simulator"s versatility, It discovers that the simulator may reflect the conditions of development when we exanimate he simulator"s reliability with the empirical datum.

本文以水溶性气藏数值模拟研究为研究目标，在系统调研国内外文献、深入分析国内外研究现状的基础上，综合利用渗流力学、油气藏工程、数学物理方法、射孔完井以及数值模拟理论等多方面的知识，完成了以下研究工作并取得相应的研究成果；①通过对大量的资料调研，分析了水溶气、地层水性质、储层地质性质以及影响气体在水中溶解度的因素。②考虑到由于高压产生的大量水力裂缝，采用有限差分方法建立水溶气运移的三维、双重介质、气-水两相全隐式数学模型，该模型描述了水溶气在地层中的释放、运移和采出的整个过程。③在原有黑油模型的基础上，根据水溶性气藏数值模型编制了该数值模型的求解程序，该程序可以求解单重、双重介质两种情况。④通过模拟不同开采速度对水溶气开发效果的影响，发现开采速度较慢的时候可以取得较好的开采效果。⑤在模拟器中考虑了注水对水溶性气藏开发的影响，地层水回注可以大幅度提高水溶气的采出程度。⑥为增加模拟器的通用性，在模拟器中考虑了射孔完井方式对开采的影响。⑦检验模拟器计算的可靠性，发现在使用实验数据对水溶性气藏进行模拟时，模拟器可以很好的反映气藏开发的状态。

Felting is a process of compaction and entanglement of fibers that occurs when wool is agitated in water.

缩绒是羊毛在水中搅动时的纤维间出现彼此毡合纠缠的现象。

With the chemical flocculant help,It can reduce Ssand COD of the water in the maximum extent .

在化学絮凝剂的帮助下，可以最大程度上降低污水中的ss和COD。

An increasing number of studies have cast doubts on the benefits which water fluoridation can bring to the teeth.

一个越来越多的研究投下的好处是在水中加氟可以给牙齿疑虑。

Not all free-swimming animals stay in one zone-the sperm whale dives to over 500 m (1,650 ft) to feed on squid, returning to the surface to breathe air. Some animals from cold, deep waters, such as the Greenland shark in the Atlantic, are also found in the cold, surface waters of polar regions. Over 90 per cent of all species dwell on the bottom.

不是所有的自由游动的动物都在一个地带--抹香鲸潜在500米（1650英尺）多深的地方，以鱿鱼为食物，重新回到表面上面来呼吸空气一些动物从冷，深的水中，像在大西洋的格陵兰鲨鱼，也是在极地的冷，水面上发现的这超过百分之90的居住在底部。

The outside source applies color is because the tooth surface exists various germs, they secrete many sticky sex materials in the tooth surface, everyday the tea dirt in the food, smoke Zi, and drink aquatic and some mineral qualities and people the mineral quality within saliva adsorb on these sticky sex materials to form germ spot and tartar and make tooth yellow gradually or black.

外源性着色是由于牙齿表面存在着多种细菌，它们在牙齿表面分泌许多黏性物质，日常饮食中的茶垢、烟渍、以及饮用水中的某些矿物质和人们唾液中的矿物质吸附在这些黏性物质上形成菌斑和牙石，逐渐使牙齿变黄或变黑。

Gomme syrup is made with the highest percentage of sugar to water possible, while the gum arabic prevents the sugar from crystallizing and adds a smooth texture.

Gomme糖浆也许是在水中溶解比例最高的糖，而阿拉伯树胶可以防止糖结晶，并增加其顺滑的质地。

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。