断裂的

Combining mechanics theory of yield and fracture of ductile metal in classical strength theory with microcosmic fracture mechanics,and by studying fracture stress field in root of notched bar made of constructional steel,the author brought forward loci equation of constructional steel in stress triaxiality space.

结合古典强度理论和微观断裂力学对金属屈服和断裂解释的力学原理，通过对结构钢深槽刻痕杆刻痕根部微观断裂应力场的数值模拟，导出了结构钢在应力三轴空间的屈服轨迹方程。

Experimental results demonstrate that when the tensile speed is fast, longitudinal volume electrical resistance decreases with the increasing of the stress, before the rupture the electrical resistance decreases to the most low, the moment the sample rupture, the electrical resistance increases suddenly. when the tensile speed is slow, longitudinal volume electrical resistance decreases with the increasing of the stress during the tensile prophase, before the rupture, the big surging of the electrical resistance occurres.

结果表明，CFRP复合材料在受力过程中，当拉伸速度较快时，试样的体积电阻随应力增加持续降低，在试样断裂前降至最低，但在试样断裂瞬间急剧增加；当拉伸速度较慢时，拉伸前期的电阻随应力增加不断降低，在断裂发生前电阻发生较大幅度的振荡。

3The microcosmic analysis of drill pipes: Through comparison metallographic analysis of drill pipes, this paper finds out the ultimate reason which its" performance are difference, then uses SEM to analyze drill pipes and studies crack and acanthopore, measures local chemistry component and the influence that Shot-peened to performance of drill pipes in it"s inside thickening transitional region, measures microcosmic rigidity of drill pipes.

本文的创新点：(1)提出了钻杆失效的过程和概念模型，即内表面缺陷-解理断裂-裂纹疲劳扩展-过载断裂，为解决钻杆失效分析中存在的困惑(各项基本检测参数基本合格，刺穿和断裂仍有发生)提出了分析方法和手段。

Jianchaling gold deposit belongs to the epithermal low temperature hydrothermal deposit with the auriferous mineralization strongly associated with the ultra basic rock,and the fault F 45 1 is acknowledged as main controlling structure.

煎茶岭金矿床是属于与超基性岩有密切成因关系的浅成低温热液型矿床，主控断裂为 F4 51 ，与 F4 51 断裂相关的次级断裂和张性裂隙构造是最重要的容矿构造。

According to the above method and approach, research work is made on the following aspects:① recurrence behavior of continental strong earthquakes;② interaction of faults and coseismic Coulomb stress changes;③ the influence of coseismic Coulomb stress changes on seismic potential of active faults;④ triggering and delaying of earthquakes due to fault interaction of the Xianshuihe-Xiaojiang seismotectonic belt.

根据上述研究思路，本文主要开展了以下几方面的工作：①大陆板内地震复发行为研究；②断裂间相互作用与同震库仑应力改变研究；③同震库仑应力改变对活动断裂地震危险性的影响；④鲜水河-小江断裂带断裂间相互作用对地震的触发。通过研究，本论文得到了以下主要认识和结论

The long axis of the high intensity isoseism of this earthquake is NE-trending, consistent with the Haiziyan Fault, which is therefore assumed to be the seismogenic fault of this earthquake.

五原6.0级地震高烈度区等震线长轴呈NE向，与海子堰断裂一致，是五原地震的发震构造。1996年包头西6.4级地震发生在由陡崖和沟槽地貌显示的NEE向乌拉山北缘断裂与NW向新生砂石厂断裂交会的部位。

The apparent viscosity and yield stress of the slurries were markedly decreased with increasing PVAc content.

结果表明，随着PVAc添加量的增加，浆料的黏度和屈服应力不断下降，膜片的断裂方式由韧性断裂转变为脆性断裂。

At early stage bedding fault activated, then transected strata to control formation of anticlines miniature, from late Permian to Jurassic growth faults controlled growth anticline, finally joined end to end, and merged to a common slip surface.

断裂早期以顺层滑脱为主，晚期切穿地层控制了纵弯背斜和断展背斜的雏形，二叠纪晚期-侏罗纪时期生长断裂控制了生长背斜的发育，且各断裂在深部归结为统一滑脱面，首尾相接使得背斜发育具明显的顺序性。

The result showed that the strength of UHMWPE fibers decreased rapidly with the increase of the twist and increased largely after the adhesive-treatment of the UHMWPE fibers surface.

UHMWPE纤维的断裂强力随着纤维捻度的增加而下降；纤维表面漫胶处理后断裂强力提高，当UHMWPE纤维中改性氯丁胶或聚氨酯粘结剂的含量为6％时，其断裂强力增加17.2％或13.9％。

Based on fine structural interpretation on seismic profiles of buried-hills in Huanghua depression in the Bohai Bay basin and outcrop survey in the western Shandong uplifted area and the intracontinental orogeny of Yanshan mountain, the paper has studied characteristics and distribution of pre-tertiary structural styles in the Bohai Bay region.

通过渤海湾盆地内黄骅坳陷等潜山地震剖面的精细解释，结合周缘隆起区露头区野外构造考察，对渤海湾地区前第三系主要发育的拉张构造、挤压构造、走滑构造、负反转构造、重力滑动构造等5种进行了研究，这些构造在南北向上大致以沧东断裂、北西西向上大致以张家口－蓬莱断裂和齐河－广饶断裂为界分为六个区，不同区之间的构造线走向及构造样式组合存在较大差异。

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。