二次形式

Through the tests on gas driving water and water driving gas, the flow law of gas and water was real-time observed. Mainly based on the test of water driving gas as an example, the development of molding coal sample and NMR triaxial osmoscope was demonstrated. The experiment process of water driving gas and parameters were demonstrated. NMRI images of molding sample in horizontal cross-section along the driving direction were obtained by NMRI instrument. The results from images were analyzed and compared. Some novel laws were obtained as the following:(1) the leading edge of water driving has inconsistency. This certified the important previous conclusion that the storage of methane mainly was absorbed in inner surface of pore from NMRI technique;(2) the existence of dominant driving pathway was tested and the way kept almost fixed. The pathway is apt to exist in the edge of coal samples where pore and fracture fully develop;(3) the variation of water flow determines the transport velocity of leading edge of water driving and it has lag effect;(4) the effectiveness of the first driving is better than the second driving;and (5) the subsequence of water driving gas are from trunk fractures to branch fractures, then to branch pores.

主要以水驱气NMRI试验为例，详细介绍了核磁共振三轴渗透仪和型煤试件的研制，并重点阐述了水驱气试验过程和相关参数，利用NMRI技术实时观测得到了不同时间沿驱替方向型煤试件水平剖面的NMRI成像图，最后对试验结果进行了比较分析，揭示了一些新的规律认识：(1)水驱替前缘具有不一致性，从NMRI试验角度验证了前人甲烷类气体赋存形式主要以吸附在孔隙内表面为主的重要结论；(2)煤试件存在优势驱替路径，且这种优势路径在驱替过程中基本保持不变，水驱气的优势驱替路径易产生在煤试件边缘，即煤孔隙裂隙发育区；(3)水驱流量变化决定了水驱前缘的运移速度，且对水驱气效果具有滞后效应；(4)水驱气初次驱替效果好于二次驱替效果；(5)水驱替气的顺序为：主要大裂隙—周边裂隙—周边孔隙。

This method is also available for other problems of unsteady flow around complicated bluff bodies at medium or high Reynolds numbers and the results are used as reference for wake control The phenomena of the sinusoidally oscillating flow past a circular cylinder are also studied.

本文应用有限差分方法求解涡量-流函数形式的N-S方程，数值模拟了园柱瞬时起动后流动分离、旋涡生成、脱落以及随时间推进涡街产生和长期非定常演化过程，包括对称涡的生成，二次涡形成的α结构及卡门涡街等。

But generally thinking, the enterprise internationalization management began in 16 century, developed vapidly from 17 to 19 century, and became its main form --multinational company after World War II.

但一般认为，企业国际化经营始于十六世纪，经过十七到十九世纪的迅速发展，在二次大战后形成了其主要形式—跨国公司。

It can support the main stream database now, such as SQL Server 2000, Oracle 9i, DB2, and can be distributed on servers running Weblogic, Tomcat, JRun and JBoss. It can satisfy most requirements. The user interface is simple and wieldy through the XML configuration file and "taglib"; it is convenient for developing.

该组件支持SQLServer2000，Oracle9i，DB2等主流数据库，并且可以部署在Weblogic，Tomcat，JRun，JBoss等Web服务器上，能够满足绝大部分开发要求；该组件的接口简单易用，主要是以XML配置文件和taglib的形式体现，方便二次开发。

Economic Law is basic law for marketing economy,which is supplemental inmarket allocation of resource,in market allocation of resource.It is categorized as'second adjustment'law,which readjusts economicrelations built by the adjustment oftraditional civil and commercial law.

经济法是市场经济的基本法，在市场资源配置上为补充形式，是属于&二次调整&的法律，是对已经由传统的民商法调整而形成的经济关系再次调整的法律。

However, for B2C e-business, current development model does not fit to create flexible and variable system. That is to say, without redeveloping system, it is not simple, convenient or variable for users to change the function and style of the web pages and the structure of the web site.

而对于B2C电子商务系统而言，当前的开发模型并不能很好地实现B2C电子商务系统的灵活可变，即在不对系统进行二次开发的前提下，不能够让用户简单、方便、灵活地改变网页功能和表现形式以及网站的结构。

Combined lining of the primary bolting and shotcrete lining and the secondary formwork puring concrete lining is applied to the system of waterproofing and drainage at Yanlieshan tunnel of Jiujiang Jingdezhen road.

九江至景德镇高速公路雁列山隧道防排水系统采用初期锚喷砼和二次模注砼的复合衬砌形式。

This structure forms of multi-effect falling film evaporator at the end of the second steam condensation effect for the same temperature of water, and then discharged from the condenser.

这种结构形式的多效降膜蒸发器的末效二次蒸汽冷凝为同温度的水，然后从冷凝器排出。

The continous prestressed concrete girder bridge is divided into three inters,(30m+50m+30m), with the main span of 50m, and 30m-symmetry one.

本预应力混凝土连续梁桥共分为三跨（30m+50m+30m）主跨50m，边跨对称30m；主梁采用单箱单室预应力混凝土箱梁，跨中梁高为1.5m，支座处梁高为2.8m，截面高度按二次抛物线形式变化；桥面净宽为7+2×1.5m；设计荷载为公路-Ⅰ级。

A new study idea that makes the occupant injury prevention research and CAD/CAE technology on an integrate mathematical model by means of feature theories and feature design technologies was brought, and it is maybe useful if we study automobile passive safety on a new view of point.The conclusions of this thesis included that what are the main factors of airbag-related injuries and the preventive measures, based on the research of the relationships between injury parameters, such as HIC, chest acceleration, neck force, neck moment, femur axial force etc, and impact speed, belt-use, occupant size (50th and 5th), sitting position and so on. The thesis evaluated whether the effectiveness of the airbag can be increased by making the airbag adaptive to the crash conditions, and points out that the size of the ventilation hole has the dominating influence on the performance of the airbag and is a key factor for intelligent airbag, multi-stage and lower-power inflator can cost effectively minimize the risk of injury to occupants from crashes. It is important for the researchers of intelligent airbag to keep the small size unbelted occupants in focus and it is necessary to study deeply the influence of airbag fold patterns and the extremity out-of-position situation. These topics are important in the study of occupant injury prevention and vehicle safety design.

论文研究得出产生气囊损伤的主要原因和防护措施；在研究汽车碰撞速度、安全带使用情况、乘员的体型5~(th和50~、乘员乘坐的位置等不同事故条件作用下，乘员的头部、颈部、胸部和腿部损伤参数变化规律的基础上，论文从能量因素出发，深入研究了安全气囊卸载能力、气体发生器产气能力和气囊折叠对乘员损伤参数的影响，指出起卸载作用的排气孔其截面积是智能型安全气囊最重要的控制参数之一，以及采用降能展开或二次充气气囊有助于提高汽车安全防护性等重要结论；论文在参数分析的基严内容提要2 础上得出的智能型安全气囊应以不佩戴安全带的5乘员作为主要防护目标进行研究、有必要深入研究气囊折叠形式和司机处于极端离位状况时对损伤参数的影响等结论，对深入进行汽车乘员碰撞损伤研究和汽车安全性设计都具有重要的理论和工程实际意义。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。