In this way , when obturation cubage leave absorb oil cavity it connects the eduction oil cavity with the v trough and with the increasing of the turning angle , the size of the cross section of v trough become bigger and bigger , which make the pressure between the cavity of two blades much higher and higher , and until it completely connects the eduction oil cavity , it reaches the pressure of the eduction , and it can effectively reduces the fluid noise caused by high pressure return flow 这样，当密闭容积离开吸油窗口之后，通过v型尖槽逐渐与排油窗口连通，随着转角的增加， v型尖槽通流截面积逐渐增大，这就使两叶片间容腔内的压力逐渐升高，直至完全接通排油窗口时，才升压达到压油腔的压力，这样可以有效地降低因高压回流而引起的流体噪声。
Firstly , there is a full discuss of space aircraft thermal control . the background of the research for this paper is also presented here , in chapter 2 , there is a complete discussing of fem realization in numerical heat transfer , including delaunay grids generation and display , two - dimension temperature field function eduction and collectivity compound 首先全面论述了航天器热控制和热分析的基本内容，指出本课题产生的工程背景。在第二章中完整地论述了有限元数值计算方法在解决传热问题中的实现，包括delaunay网格的生成与显示，二维温度场泛函的推导和温度场的总体合成等。
Larval fish of cynoglossus semilaevis g unther were treated with colchicines to get the karyotype , 12 ~ 50 - day larval fish were selected to be put into the solution of colchicine of different concentration for 5 - 6 hours . the fin , and the other part of the fish were cut off to be treated with low concentration infiltration , solidify , eduction and other procedures . at last , the suspending cells can be gained and treated with air - drying method 选取孵化时间为12 50天的幼鱼，在不同浓度的秋水仙素溶液中处理5 6小时，分别剪取冠状幼鳍、鳃丝和身体周围的鳍条，通过低渗、固定、解离，得到细胞悬液，热片法滴片， giemsa染色。
Based on the above background and the current establishment of authenticated student information system , this article has designed a pki security system which fit eduction administration management pattern and have completed system design and application development for schools to apply their certificates . thereinto , it is mainly included with the model design of certificate apply for multiple subject of school and school superior which to resolve on - line identity verification problem the model implement in the browser / server pattern . additionally , making use of graduate school ' s advantage in the smard card technology , i have designed and developed general component providing smart card service , which is independent with upper applications . upper applications can use uniform interfaces to realize communication with different cards and cardreaders . so this smard service component make the smard card application more easily to use the smart card service 基于以上背景，并借asi ( authenticatedstudentinformation )学生信任信息体系建立之契机，在本文中有针对的设计了一套符合教育行政管理模式的pki安全认证系统，完成了核心环节“学校证书申请”部分的体系设计与系统开发。其中主要包括建立包含学校与学校主管单位信息双重主体的证书申请设计模型，解决学校在线证书申请的身份审核问题，并在浏览器服务器模式( browse server模式)下予以实现；借助教育部校园卡标准化研究所在智能卡技术方面的优势，设计与开发了本系统中基于windows平台的智能卡通用服务组件，以实现智能卡服务与上层应用系统完全独立，应用系统通过相同的接口调用完成与不同卡和读卡设备的交互工作，从而简化与扩展了智能卡相关功能服务等。
Another reason is a patient tired , lack of power , carry momentum decreases , the mobile level of each systems all lowers human body , flowing flesh is in bowel flabby condition , colonic motion is abate , send excrement and urine to pass in the retention period inside bowel long , moisture is absorbed excessive , defecate eduction is difficult 另一原因是病人倦怠，乏力，运动量减少，人体各个系统的活动水平均降低，肠平滑肌处于松弛状态，结肠运动减弱，致粪便在肠内停留时间过久，水分被吸收过度，大便排出困难。
As the high - speed development of industry and agriculture , non - controlled eduction of live sewage , relative lag of cure of water pollution and its own water character , the current eutrophication status of taihu lake , the mostly component of taihu valley , is dangerous and has endangered the economy development and people ' s natural life in the taihu valley 摘要太湖是太湖流域的主要水体，由于流域内工业、农业的高速发展及生活污水无节制排放，水污染防治相对滞后，加之湖泊自身的水文特徵等效应，使太湖富营养化形势严峻，并已危及流域内的经济发展和居民正常生活。
