说明原因

At the BCL of 500ms, 1000ms and 2000ms,the VWtimes increased markedly with the BCL prolonging, and the degree of increasing was even obviously when heart rate was slow (BCL=2000ms or 1000ms). The enlargement of VWs was a most important reason to increase the incidence of ventricular arrhythmias; 2）At the BCL of 500ms, 1000ms or 2000ms,the VWtimes of the premature stimulates S2 was at endomembrane were wider than at the outermembrane. We supposed that premature stimulates come from endomembrane was easier inducing VF compared with outermembrane;3The VWtime of unidirectional block was wider than reentry's, we can see that reporlarization dispersion changed dynamicly. 4The QRS polar of the premature stimulates was opposite the primary beats ,which suggesting that excitation of inducing premature beats was coming from epicardial. That is to say electrotonic potential take part in the creation of reentry;5With the ratio of the Tp-e/QT increasing the occurrence of VF was upgrading. So the ratio was an effective method to estimate the event of SCD.6 The VWtimes of S3 were broaden than S2's. But we can not study penetratingly, which is the contents of our future studies.

在BCL为500ms、 1000ms和2000ms刺激条件下，随着刺激周长的增加单向传导阻滞时间易损窗呈增大趋势；并且在心率较慢时(BCL为2000ms和1000ms)增大最明显，是LQTS患者室性心律失常发生率增加的原因之一；2）在BCL为500ms、 1000ms和2000ms刺激条件下，S2位于内膜侧时时间易损窗大于在外膜侧时的，推测来自于内膜侧的期前刺激易于诱发室性心律失常；3）折返激动时间易损窗小于在单向传导阻滞时间易损窗，折返易发生于S2刚进入单向传导阻滞区间时，这说明复极梯度的不均一是动态变化的；4心电图上倒置QRS波与正常S1刺激所引起QRS波极性相反，提示不同位置S2刺激引发的室性早搏的兴奋均来自于外膜侧，说明了电紧张电位扩布参与了折返的产生；5）Tp－e/QT可以反应跨膜复极离散度，随着Tp－e/QT比值的增加PVT的发生增多，其可以用来预测室性心律失常的发生。6）随着期前刺激数目的增加时间易损窗增大。

So we adopted the isotope marking method in order to know the distribution of BBP in male and female mice. The result indicated 〓H-BBP presented the first-order kinetics and matched the open two-compartment model. Distributional half-life was about 20 minutes and eliminable half-life was about 6-7 hours. As α(the speed constant of distributional phase) was about ten times β(the speed constant of eliminable phase), this compound had a fast distribution and a low elimination.

为了揭示BBP致毒有明显性别差异的原因，采用同位素标记方法示踪BBP在雄、雌动物体内的归趋，结果表明：BBP在动物体内呈一级动力学线性过程，符合二室开放模型，分布半衰期为20min左右，消除半衰期为6-7hr左右，分布相的速度常数α是消除相的速度常数β的10倍左右，说明该化合物在体内的分布较快、消除慢的特征。

On the basis of forenamed, Chapter 4 put forward that cooperation system was a new way to push the dual economic structure"s conversion. This chapter was consisted of there parts, first, it proved that cooperation system was the inevitable choice of peasant; second, it introduced four steps to advance the dual economic structure"s conversion of our country; at last, it introduced other reformations which coincide with cooperationsystem.

第四章在以上分析的基础上，提出合作制是推进我国二元经济结构转化的新思路，包括三个方面的内容，一是论述了合作制是农民的必然选择，介绍了合作制的定义，分析了农民选择合作制的原因，并说明合作制可以解决我国传统解决办法的不足；二是介绍了以合作制推进我国二元经济结构转化的四部曲，这四部曲是一般过程，每个地区都可以根据本地的条件有所取舍；三是介绍了以合作制推进我国二元经济结构转化需要的配套改革措施，首先，要统筹城乡的制度建设，其次，一定要把政府的扶持和农民的积极自救相结合。

Compared with the seed rain, the quantities of the perfect and geminated seed were less 2.15 seeds m^(-2) and 0.20 seeds m^(-2) respectively, Seed survival rate and the proportion of seed damaged by animals were 13.51% and 45.90%, respectively, which showed that animal damage was the main cause of seed loss.

土壤种子库种子存活率仅13.51%，动物捕食率达45.90%，说明动物的捕食和搬运是福建青冈种子缺失的原因之一。

Whether this was truly a malignant tumor is uncertain, but it indicates that pathological changes in hemophilic blood cysts can closely resemble those of tumors—thus, the name pseudotumor.

但是，那是否是恶性肿瘤至今仍没有确定，但这一事实说明在病理改变上，血友病性血囊肿酷似那些恶性肿瘤――那也是为什么给它命名为假肿瘤的原因。

The second chapter analysed the characteristics and reasons of anti-dumping at present, explained the need and the impendence of counter the anti-dumping.

第二章分析了目前国外对我国反倾销的现状特点和形成的原因，说明应对反倾销的迫切性和必要性。

This part firstly stipulates the harm brought by the credit crisis by using the facts and data. Based on the analysis of the reasons for the credit crisis, it also demonstrates the necessity and impendency of establishing the credit checking system in China.

首先用事实说明当前我国经济领域中信用危机所带来的危害，在对其原因加以分析的基础上论证了在我国建立征信制度的必要性和迫切性。

Some indexes such as nutrition and intelligency satus of children and their family enviroment have been examinated in order to offer the scientific data for further policy making and planning.

说明新新里委开展社区教育、保健的措施是行之有效，值得推广的。本文还就新新里委社区保教效果不平衡的原因进行了讨论，并对今后进一步开展社区保教工作提出了建议。

Taking as examples the dialogues on historical knowability in postmodernism and realism, the dialogues between different historical periods and the dialogues between various voices from different perspectives, this paper intends to tackle the colorful polyphonic features of Possession from all sorts of voices and consciousnesses to reveal the cause of controversies and conflicts in the criticism around the novel.

本文以《占有》中后现代主义和现实主义有关历史可知性的对话，各个历史时期之间的对话和多视角叙事为例，探讨了该小说中的众声喧哗的景象，以说明《占有》研究中存在大相径庭的各种解读的原因。

In the first part, the thesis mainly checks the concept of urban and rural dual structure, manages to give it a philosophic, definition and then lists various conducts of the contradiction. It also analyzes the subjective and objective reasons that cause the Chinese urban and rural contradiction, and dissect the contradiction抯 feature, history, current situation and influence. This part means to explain that China is a prototypic developing country with Chinese characteristic urban and rural dual structure co!~tradiction. The incisive contradiction exists mainly in seriously backward countryside. In the fields of economy, politics, culture etc, it badly affects and restrains our economy and society抯 sustained, rapid and coordinated development manifoldly and omnibearingly.

第一部分从考察城乡二元结构的概念开始，给予城乡二元结构以哲学定义，然后列举了我国城乡矛盾的种种表现，分析了我国城乡矛盾形成的主客观原因，进而剖析了我国城乡矛盾的特征、历史与现状及影响，旨在说明我国是典型的具有中国特色的城乡二元结构矛盾的发展中国家，城乡矛盾极其尖锐，主要表现为农村元严重落后，在经济、政治、文化等方面，多层次全方位地严重影响和制约着我国经济与社会的持续、快速、协调发展。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。