The second chapter analysis the way how to decide the length of the limiting flaw . according to the theory of fracture mechnics and damnification mechnics , and the author lakes two way for calculating the length of the limited flaw , in finally , two calculation result is identical , so we can draw a conclusion that the method that we used in the past is in consistent with reality 本文第二章分析了如何应用断裂力学和损伤力学知识，用两种不同的求解方法来确定临界裂纹的长度，计算分析发现两者结果一致，这说明我们所使用的确定临界裂纹长度的方法和实际情况是一致的。
The problem whether the action and compensation should be made concerns the applied conditions in wh ich the compensation system of the civil liability in the security transaction . so , the definition for the category of civil liability of transaction in securities include four parts : the definition of principal part in the security trans act ion ; the definition of causal relationship which happens between act of tort and the fact of damnification ; ! he definition of the style civil liability in the security transaction and the definition of error 应不应该诉、应不应该赔指的是何种四川大学硕士学位论文情况下适用证券交易民事责任赔偿制度。因此，证券交易民事责任的界定包括证券交易民事责任主体的界定、证券交易民事责任类型的界定、因果关系的界定、过错的界定证券交易民事责任.与一般侵权行为相比，证交易民事责任不同与一般民事责任。
Through the test , a few data of leakage due to defects in composite geomembranes under different aperture of damnification , different water pressure and two kinds of supporting layer material are gained and the primary factor that influences the magnitude of leakage due to defects in composite geomembranes are analysed 得出了在不同的压力水头作用下、不同的缺陷孔径与两种垫层材料组合的多种工况下缺陷渗漏量实测值。并分析了影响复合土工膜的缺陷渗漏量大小的相关因素。
