防止

In the view of ability difference, this paper studies the asymmetric mechanism of collusion-proof, and proves that: when ability difference is symmetric information, collusion stake can be distributed on this common information, thus ability difference cannot result in server benefit conflict between agents to make the coalition c...

本文在强调代理人能力差异的基础上，建立防止合谋的非对称机制。并证明当能力差异为公共信息时，合谋收益就可以据此公共信息进行分配，因此双方的能力差异并不足以使代理人之间产生严重的利益冲突并导致利益集团的崩溃，从而无法防止合谋的发生

For severe brain injury patients after tracheotomy , make primary health care, and take effective airway wetlands, the timely removal of airway secretions, prevent lung infection, prevent gastrointestinal vomitus back to the inflow of respiratory and other measures, is the most important task of nursing care.

对于重度颅脑损伤患者气管切开后，做好基础护理，采取有效的气道湿化，及时清除气道分泌物，防止肺部感染，防止消化道呕吐物返流入呼吸道等措施，是护理工作的重中之重。转载于中国论文联盟 http：//www.lwlm.com

Preventionof back-flow of air prevents the hydrogen fuel system from backfiring,which is another common problem of hydrogen fuel systems.

防止回流的空气，防止氢燃料系统从回火，这是另一个常见的问题，氢燃料系统。

Current distributions in a cathodically protected crevice between a simulated coating and segmented mild steel electrodes were measured in diluted NaCl solutions. The effects of the control potential, solution conductivity and crevice thickness on the current distribution were studied.

1前言在联合采用绝缘覆盖层和阴极保护技术防止土壤或水中的钢结构，特别是地下油气管线外壁腐蚀的情况下，阴极保护能否完全防止剥离覆盖层下的缝隙腐蚀成为近些年来阴极保护领域的一个研究热点［'］。

The wetland has significant function for mankind of storing floodwater,fight drought, complement groundwater ,adjust climate, prevent soil corrade ,reduce environmental pollution .because it has abundant natural resources,special ecological environmental and structure.The countries all over the world strength on protecting wetland,taking on any masures to prevent the wetland degeneration and disappearance. Studies on the restoration and reconstruction of disturbed wetland become the hotspot of world environmental study.

湿地由于其独特的生态功能和结构，具有蓄洪抗旱、补充地下水、调节气候、防止土壤侵蚀、保护生物多样性、降解环境污染、促淤造陆等对人类具有重要意义的功能，所以世界各国都在加强湿地的保护，采取各种措施防止湿地的退化和消失，湿地的生态恢复和重建已经成为世界环境科学研究的热点。

Through block wall experimental study we can find out that cracks would appear late and the load of crack-resisting and limit-resisting are increased obviously by the constructional measures in the wall. It is very effective method that the splayed cracks are controlled by sill ring beam, the horizontal bending cracks are controlled by structural column on the side of the wall and the horizontal cracks on the top of the wall are controlled by the whole ring beam. It is the most effective method that wall cracks are controlled by structural column, crout column and sill ring beam.

通过试验主要得到在墙体中采取构造措施后，墙体裂缝推迟出现，开裂荷载和极限荷载都有很大程度的提高，同时发现窗台圈梁在控制窗角的八字缝、墙体两侧构造柱对于防止水平弯曲缝以及全截面的圈梁在防止墙体和圈梁交界处的裂缝的出现能起到很好的效果，通过试验确定在砌块墙体中采取&构造柱+芯柱+窗台圈梁&的构造措施来控制裂缝是最为经济合理有效的。

The valve is installed at the outlet of pump and suited to prevent media from flowing backwards and eliminate effectively damageable water hammer in pipelines flowing media of fresh water , polluted water , sea water.

本系列产品可用在清水、污水、海水等介质的排水水泵出口管道上，既能用于防止停泵时有压水流对水泵的冲击，又能防止介质的倒流，保证管线的使用安全。

In eyes with either zonular dehiscence or weakness, application of CTR in high myopia cataract surgery associated with low diopter IOL implantation operation can prevent zonular dehiscence and IOL decentration and tilt, and may lead to prevent posterior capsular opacity and retinal detachment.

晶状体囊袋张力环在高度近视白内障联合低度数人工晶状体手术中的应用能防止晶状体悬韧带离断，使人工晶状体居中性更佳，并进而能有效防止后发性白内障和视网膜脱离的发生。

When a car is inadvertently overfilred and the tank becomes hydrostatically full, internal pressure can increase asymptotically from even small temperature increases or Balanced Bellows Safety Relief Valves product addition.

当一辆汽车是无意中overfilred和坦克变成静水充分，内部压力增加，即使是小规模渐进的温度升高或产品增加。伪狂犬病毒引起过多的产品驱动放电，它可以帮助防止罐车由于压壳灾难性的失败。 PRVs也有助于防止无意。。。

All these will lead to the question of security in our information network. How to prevent our enterprise\' s network from invading invalidly and accessing without authority or destruction, and how to assure that the important and sensitive datum of our enterprise not to be stolen、 not to be copied and used invalidly, and to keep invaders out of the network\' s door, and how to prevent our network from being invade by the viruses、 traps and so on.

如何防止企业网络体系遭到非法入侵和信息未经授权的存取或破坏，如何保证企业运营机要敏感数据不被窃取、非法复制和使用，并将非法入侵者拒之门外，如何有效防止盘算机病毒、木马陷阱等对网络内部盘算机体系的损害……，这些题目都是e时期企业面临的迫切须要解决的题目。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。