蒸发室

The operating process of liquid apogee engine (N2O4/MMH) thrust chamber is studied. By applying the SIMPLE algorithm with staggered grid, the numerical model is established. The atomization mechanism and decomposition combustion of hypergolic rocket propellant are considered in the model.

研究了远地点发动机(N2O4/MMH)的推力室工作过程，考虑了自燃推进剂的雾化、蒸发以及化学反应流动过程，采用交错网格系统的SIMPLE算法，得到了不同边区冷却流量对推力室的内流场和燃烧效率的影响结果，数值计算的结果与理论分析相符合，为推力室工作过程的稳定性分析提供了重要参考。

The steam chest ,vapor separators,preheater and surface condenser are designed and constructed for an internal pressure of 1 bar gauge and full vacuum at 121 ℃ except as follows .the shellside of the first effect chest is designed for an internal pressure of 2 bar gauge and full vacuum at 135℃.the bubeside of the prehearter and surface condenser are designed for an internal pressure of 7 bar gauge and full vacuum at 121℃.the equipment is designed and constructed in accordance with asme.certificates are provided.

蒸发分离室，蒸汽室，预热和冷凝器要设计结构内部能够承压1 bar 和在121 ℃充满真空。一效蒸汽室壳侧要设计成能够承压2 bar 和在135 ℃。预热器的管侧和表面冷凝器设计成7 bar 和在121 ℃。设备的设计和制造要符合ASME。要提供证明。

82 Times as high as the flow rate at the inlet; the velocity profile in the lower region is relatively uniform, and changes at the exit from a parabolic shape towards a plug flow as Re increases; The strong circulating flow in the upper region is very favourable to evaporization of heated fluid because it not only forces all the heated fluid to flow through the liquid surface and, therefore, to evaporate effectively, but also causes a large part of fluid to recirculate to the liquid surface and, therefore, to get a second opportunity of evaporization. In addition, the uniform velocity profile in the lower region is also favourable to crystallizing process.

轴向进料蒸发室进口管侧上方有强烈的循环流存在，循环流流量为进口流量的1.48～1.82倍；循环流下部流速分布较均匀，出口区流速在低Re时为抛物线分布，高Re时接近活塞流；强烈循环流的存在不仅迫使加热流体全部流经液面及其附近进行充分蒸发，而且之后还使相当部分流体再次循环回到液面及附近进行二次蒸发，对蒸发操作十分有利；蒸发室下部流速的均匀分布亦有利于蒸发结晶过程。

In the development of institutions, the company set up under the Chinese Room, physical and chemical analysis room, drug analysis room, intelligence research, such as research departments; in experimental instrumentation, the company has advanced equipment at home and abroad, such as high-performance liquid chromatography, gas chromatography spectrometer, UV spectrophotometer, tableting machines, biochemical incubator, constant temperature and humidity, and drug dissolution device, Rotary Evaporator, vacuum drying, optical rotation detector, such as large-scale apparatus.

在开发机构方面，公司下设中药室、理化分析室、药物分析室、情报研究室等研究部门；在实验检测仪器方面，公司拥有国内外先进的仪器，如高效液相色谱仪、气相色谱仪、紫外分光光度计、压片机、生化培养箱、恒温恒湿器、药物溶出仪、旋转蒸发仪、真空干燥箱、旋光测定仪等大型仪器。

A sump (226) containing the liquid to be distilled is located at a lower portion of the housing. A rotating element (234) extends into the sump and forces liquid to be distilled up a stationary feed pipe (238) where it is discharged into the evaporating chambers which are open at both their inner and outer ends.

一个盛装要被蒸馏液体的储液槽(226)布置在箱体的底部，一个转动部件(234)延伸进储液槽，将要被蒸馏的液体驱至静止的给液管(238)，液体由此被供入内外端开放的蒸发室。

Both the desiccant brine (12) and air are heated in the air drier (17), and the hot brine when in the vacuum chamber (11) has a temperature above atmospheric, which provides a higher vapour pressure and its water is readily vaporised.

脱水剂盐水（12）及空气在空气干燥器（17）中加热，在真空室（11）中热盐水有高于大气的温度，其提供更高的蒸汽压，其水分容易蒸发。

In this way, the liquids are vaporised at the surface thereof, sucked into the chamber without any need for a carrier gas and made to react with the dopant such that the oxide layer forms on the substrate.

这样，这些液体在其表面蒸发，无需任何的载体气体即可吸入腔室中，并与掺杂物反应，从而在衬底上形成氧化物层。

Air is transfened into hot air by passing through the heater,and goesinto the hotair separator on the top of he dryer,then goes into the drying room evenly.at the same time liquid materials are sent to the centrifugal atomixer on the top of the dryer the the screw pump with stepless speed regulation,and atomized into timy dr-oplet which will contact hot air,then dried into dry product within shortest time.

空气通过加热器转化为热空气，进入装置在干燥室顶部的热风分配器，然后均匀的进入干燥室，同时通过无级调速的螺杆泵将料液送至装置在干燥室顶部的雾化器，使料液雾化成极小的雾化液滴，料液和热空气并流接触，水份迅速蒸发在极短的时间内干燥为成口若悬河，成品经干燥塔底部和旋风分离器排出，废气由风机抽出排空。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。