主要原因

Two dominate variation trends are distinguished in the data plots of compressional-wave velocity versus Possion ratio, indicating the effects of mud content and calcite cement on the elastic properties of sandstone samples. In each change trend, with the rock texture transfering gradually from grain-supporting to matrix-supporting with increasing mud and calcite cement content, the propagation of elastic wave also changed from grain-to-grain contacts to rock matrix, which resulted in the measured data illustrating extremely different tendency. It helps utilize the physics properties of reservoir sandstone to extract rock texture and diagenesis properties in the research area.

样品在纵波速度－泊松比交汇图中表现出两种主要变化趋势，分别对应泥质与钙质胶结物的影响；在每个变化趋势中随泥质含量与钙质胶结物含量的增加，岩石结构从颗粒所构成的骨架支撑逐渐表现为基质支撑，弹性波能量的传播也从通过颗粒接触边界转变为通过岩石基质传播，这是使砂岩样品测试结果表现出两种截然不同变化趋势的主要原因，为利用岩石物理特性从地震资料中提取岩石结构、沉积与成岩特征的信息提供了依据。

Two sorts of backfills, bentonite and cement boned sand, have been tested in the laboratory for the system by unstable state method.

其主要缺点是地下换热器的初投资较高，这也是阻碍地源热泵技术发展的主要原因之一[1 ] 。

The group, which represents the major banks, said credit cards had become "demonised" as one of the main causes of ballooning debts, but added:"Without plastic, our society would virtually grind to a halt ."

这个代表着各主要银行的协会说，信用卡已经成了&魔鬼&，是造成债务激增的主要原因之一，但他们也补充道：&没有信用卡，我们的社会将会停滞不前。&

Wire feed through, I understand he started from the actual production of theoretical knowledge, such as slag ladle overflow Java is the main reason for high oxygen, approach is the main feed wire.

通过喂丝，我才渐渐的从实际生产理解了理论知识，比如钢包溢渣的渣的主要原因是氧高，主要处理办法是喂铝线。

The main contributions are listed as follows:(1) During furnace working, Crude oil evaporation in the pipeline is one of hidden safety trouble, which maybe be caused by severe fire deflecting.

归纳起来，本文的主要工作和创新点表现在以下几个方面。(1)管道原油汽化是直接加热炉安全运行的隐患，火焰严重偏烧是引起管道原油汽化的最主要原因之一。

We analyse briefly owes main reasons that the area ecological environment destroyed,and emphasize necessity that retire the area of mining abandoning field of Dongma countryside in Xi Chou County and we aimed at problem that have had ,and exemplify restroyed suggestions that a few minings abandon the field ecological environment restoring measure , mainly it includes the measure of education and concept,the measure of science and technology,project measure, ecological measure, policy and law measure.

中文摘要：在综合评价董马乡采矿废弃地的生态环境基础上，结合科学发展观的基本要求，简要分析该地区生态环境破坏的主要原因，并强调西畴县董马乡采矿地区生态坏境的必要性，针对存在的问题，着重提出一些采矿废弃地生态环境的整治修复措施，主要包括教育与观念措施；科学技术措施；工程措施；生态措施；政策法律措施。

In the protein of barley, the contents of Glu, Pro, Phe, Arg are high, and the Limitation amino acids are Met and Trp. The content of Lys in barley is higher than that in wheat, which showed it had a good nutrition quality. The reason for barley protein unforms gluten net tissue was the content less of prolamine and glutein in the protein of barley. The one of main factors for barley showing high biological activity functions might lie in its high β-glucan and polyphenol chemical compound content.

大麦蛋白质中谷氨酸、脯氨酸、苯丙氨酸和精氨酸含量较高，限制性氨基酸为蛋氨酸和色氨酸，赖氨酸的含量高于小麦的，表现出较好的营养品质；大麦蛋白质组分中醇溶蛋白和麦谷蛋白含量较低，是其不能形成面筋网络组织的主要原因；大麦中含有β-葡聚糖和多酚类化合物是其生理活性功能较强的主要因素之一。

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。

The main reasons on condensed water production of oil-fired hot water boiler was introduced,the removal method of condensed water was carried out,and the advantages and disadvantages of condensed water was studied.

主要介绍了燃油热水锅炉烟气冷凝水产生的主要原因，冷凝水的利弊分析，冷凝水的排出措施。

These data,especially the seiches with relatively large amplitudes,were examined by using statistics and natural period analysis.Basic chracteristics of seiches,such as monthly and annual occurrences,oscillation period, occurrence duration and occurrence time of the peak,were derived. Among these 20 tide-gauge stations...

结果表明，该海域主要港湾假潮出现具有明显的局地性、季节性和年际变化；夏季是大振幅假潮(振幅1 )≥ 80cm的多发期，冬季基本上不出现；龙口港湾的大振幅假潮最为突出，最大振幅可达 2 93cm ；气压和风速、风向突变的良好配合，是发生大振幅假潮的主要原因

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。