主要原因

It has been found that although electrical failure was caused by solder joint crack, it was the underfill related failures that cause the solder joint crack.

在此基础上，揭示了倒装芯片封装的失效机理：焊点断裂是导致封装电失效的原因，而下部填充料中的损伤是引起焊点断裂的主要原因。

The enthusiasm are kept within limits because of insufficient expense investment; the rare chances for the coaches to exchange with their opponents and the poor ability of their scientific research makes them focus too much on the practical drill and rely on the experiential drill; the poor technical and ideological quality of the umpires are mainly to blame for unjustness of judgment.

由于经费投入不足等原因遏制了基层培养跆拳道后备人才的积极性；教练员外交流机会少，对运动训练全过程仍只抓训练实践活动本身，科研能力不强，经验训练占很大比例；跆拳道比赛存在裁判不公的现象，裁判技术、思想作风是造成裁判不公的主要原因；没有建立人才储备机制，大量17岁以后可以出成绩的运动员流失社会：基层运动员的学习质量无法保证，造成了运动员无法提高技术水平、就业困难等问题。

To these kinds of real estate bubble current situations , there are 9 sorts of main reasons: own reason of real estate trade, the influence of the interest group, the defect system of the land, the developing capital market, the disadvantageous factor of the money market, the speculator's expectation, the social factor, the unrational psychological factor, the international factor.

针对这几种房地产泡沫现状，分析了9个主要原因：房地产行业本身原因，利益集团的左右，土地制度的缺陷，低迷不发达的资本市场，货币市场的不利因素，社会因素，投机者的预期，非理性的心理因素，国际因素。

S. S. R. and Great Britain after the World War Ⅱ. This thesis made an inquiry on the relation KMT and CPC after the Pacific War breaking out and the reason why the later situation tended to be strained, and pointed out that KMT arrogated to itself some importance and cancel the independent position of CPC in the whole nation, and wanted to annex.

本章对太平洋战争爆发后国共关系一度缓和及其后来又趋紧张的原因也进行了探讨，指出国民党的自大与企图取消中共独立地位，吞并中共武装力量和解放区政权是国共关系不能改善的主要原因。

The fourth chapter analyses the state of ecological, economic and social in Yuli oasis system from 1991, it is found that Yuli oasis system was in over loading state according to half richness, richness and modernization level from 1991, the fundamental reasons were fragility of environment, level lowness of economy development, draggling of basic establishment, lowness of population stuff, and lowness of living standard.

第四章对尉犁绿洲系统近10年来的承压超载状况进行了分析，结果发现，自1991年以来，在小康、富裕与现代化等不同生活水平约束下，尉犁绿洲系统都处于超载状态，生态环境脆弱、经济发展水平低下、基础设施落后、人口素质低下与生活水平处于较低水平是尉犁绿洲系统处于超载状态的根本原因；但从整体看，尉犁绿洲系统的承载状况趋向好转，主要原因在于尉犁绿洲人口规模小、人均资源利用指标处于较高水平、水利设施条件进一步改善和绿洲居民预期寿命始终处于较高水平。

In the common market, the non-tax trade barrier almost gulfed the fruits of the Customs Union with the protection of nationalism, which is the major cause for integration stagnation from 70s to 80s in the 20th century. As a conception objectionable to the Great European Goal, nationalism hindered the rapid development of integration in its initiative phase, thus changing the concrete form and nature of integration to a considerable extent.

欧洲防务共同体作为一项军事联合的尝试，必然会推动欧洲政治联合发展，它失败的主要原因是法国民族主义的复兴；戴高乐希望欧洲联合走上不同于超国家主义道路的国家间主义道路，不惜用撤离法国代表的极端方式来达到目标；共同市场中的非关税壁垒在民族保护主义的荫庇下几近吞噬关税同盟的成果，是造成20世纪70年代至80年代一体化发展停滞的重要原因。

Secondly, it is the non-governmental financial area which is naturally formed. The two parties who play the roles of supply and demand of money do the deal directly or intermediated by informal financial organizations.

本文从正规金融和非正规金融两个方面，对我国农村金融体系的历史、现状及其原因进行了深入分析，得出现有农村金融体系的外生性是导致其不健全的主要原因。

There are many reasons why I do not like leaks, but one of the main reasons is a personal one.

有很多原因，我不喜欢泄漏，但主要原因之一是个人性质的。

There are various reasons for grassland degradation, among which overgrazing is the main reason based on many researches both inland and abroad.

造成草地退化的原因是多方面的，国内外研究表明过度放牧是草地退化的主要原因。

Flight delay is mainly due to airline problems such as mechanical failure, picketing crew, air-traffic congestion, bad weather, etc. Whatever the reason is, flight delay will create inconvenience to passengers and cause great discomfort to babies and the elderly, in particular.

航班延误的主要原因是航空公司的问题，例如机械故障，纠察人员，空中交通挤塞的情况，恶劣天气等不管是什么原因是，航班延误会造成对乘客造成的不便，并造成极大的不适，婴儿和老年人，尤其是。

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。