断裂的

The first step in the degradation is most probably the classical ester scission reaction to give a carboxylic acid and olefinic end groups. Further ester scission on the adjacent ester groups of carboxylic acid and olefinic molecular chains can then lead to the formation of lower weight pyrolytic products, such as: CH〓=CHOCOPhCOOCH=CH〓、CH〓=CHOCOPhCOOH and HOOCPhCOOH, and they can pyrolyze continually to produce substrate pyrolytic compounds, such as: HOOCPhCOCH〓、PhCOOH、PhH、PhCOCH〓 and CO、CO〓. At the same time, a corsslinking cyclization reaction occurred of the formation of the gas products during the degradation of PET.

断裂大分子链端邻近羰基和乙烯基的酯键持续断裂，不断地形成小分子裂解产物，如：CH〓=CHOCOPhCOOCH=CH〓、CH〓=CHOCOPhCOOH以及HOOCPhCOOH，这些产物还会进一步裂解成分子量更低的小分子裂解产物，如：HOOCPhCOCH〓、PhCOOH、PhH、PhCOCH〓以及CO、CO〓等，与此同时，一部分乙烯基酯端基的大分子链碎片会发生支化而相互连接，再经&链脱离&和环化反应形成难燃的交联产物。

Through the observation via scanning electron microscope,we can discover that chips mainly have three types of micro-shapes like acicular,massive and squamose,its formation corresponds to PBX macro-fracture which caused by the nucleation and growth of crack and mainly embodied as transgranular fracture of explosive particles.

利用SEM观测发现PBX切屑主要有针状、块状和鳞片状三种细观形态，切屑的形成体现为裂纹的成核扩展导致的宏观断裂，并主要表现为炸药颗粒的穿晶断裂。

However, as shown by computation, the products are thermodynamically controlled, and the S—O cleavage is predominates over the C—O cleavage.

理论计算表明，最终反应的产物是受热力学控制的， S—O键的断裂绝对地优于C—O的断裂。

Thus ends the formation of the thetic phase, which posits the gap between the signifier and the signified as an opening up towards every desire but also every act, including the very jouissance that exceeds them.

克莉丝特娃将这个阶段的完成称呼为thetic phase 的形成。这个断论 thetic phase 假定了能指与所指的断裂，此断裂朝向所有的欲望开启，甚至包括溢出於此能指所指的 jouissance（101）。

The results show that the microstructure of Fe-28Al-5Cr-0.06B alloy refines by using stainless steel mold cooling method, the tensile strength of alloy increases 29 MPa, the hardness increases slightly but the elongation decreases a little at the same condition except, the impact fracture transform intercrystalline fracture into intercrystalline and transcrystalline mixed fracture.

结果表明：采用不锈钢金属型冷却，可以细化合金的铸态组织；在其他工艺相同的条件下，合金的抗拉强度提高了29 MPa，硬度有所增加，伸长率稍有下降；合金的冲击断口由沿晶断裂向沿晶＋穿晶混合型断裂转变。

Many kinds of fault tectonics differing in age and dynamic genesis occur in distribution in Northwest China and Central Asia, in long term activity with distinct character. Transcurrent activities of various scales taking place in the twoareas during Cenozic are important to accommodate area intraplate deformation.

中国西北和中亚地区断裂构造发育，不同性质的断裂具有多期活动、及在各时期运动性质不同的特点，它们在新生代时期的发生了规模不等的走滑活动，这对于调节该区域板内变形具有重要意义。

The modern structural pattern ofthe area consists of three synclines and three anticlines, a group of strike faults and a group of transcurrent faults, as well as some downfaulted basins; 8. The blue schist belt, which distributs at the northern part of the area, has a genetic relationship with the decollement plane between Yaolinghe Group and Doushantuo Formation.

晚元古代扬子板块北缘由被动大陆边缘转化为主动陆缘；7、本区的现存构造格局，由近东西向的三个复式向斜加三个复式背斜，一组走向断裂加一组横向断裂以及若干断陷盆地构成；8、本区北部的蓝闪石类矿物成带分布与耀岭河群与陡山沱组之间的层间滑脱面有关；一百五十多个白云母b。

This paper introduces the principle of instrumented impact test method and its application in production and scientific research.

介绍了仪器化冲击试验方法的基本原理及其在生产和科研中的应用，重点阐述了仪器化冲击试验方法在动态断裂力学测试技术中的开发、冲击曲线参数分析、材料断裂机理研究等领域所取得的成果，并展望了这一方法未来的应用和发展趋势。

The fracture morphology were found that the interface bonds between ductile α-Ti matrix and the brittle Ti〓Si〓 phases were divided, which companied with little lancinated edge and small cleavage facets.

与其它元素相比，适量的硼改善Ti-Si共晶合金的塑性最为显著（ε〓=11.5％），其断裂机制为韧性的基体与第二相之间的界面解键，伴有少量撕裂棱和小解理面，属于准脆性断裂。

But, when at the same time some spiritual things are not carried on, there will be a split. In the face of this threat from modern civilization, people often lose their sense of alarm. The disappearance and breaking off of traditional culture is very dangerous. Things that happened before in Han areas are likely to be reenacted here.

但是，同时一些精神上的东西不继承，就会形成断裂，面临现代文明的这种威胁，往往人们都失去了警惕性，传统文化的消失、断裂，这是非常危险的，在汉族地区发生过的事情，很可能就会在这里重演。

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。