Numerical simulation of the experiment on rock with preexisted cracks under compression and shearing 预制裂纹岩石压剪试验的数值模拟分析
The main effects of rod-like mullite on the improvement of the wear resistance were as follows: ⑴ Restraining the propagation of the preexisted cracks and bridging toughening to absorb more energy needed for the propagation of microcracks; 柱状莫来石的存在对提高耐磨性的主要贡献为:⑴阻碍裂纹扩展,桥联增韧,消耗裂纹成核、扩展的能量;
Thus, inversion structures formed along the preexisted extensional faults, and the strata at the eastern edge of the Hefei basin were apparently tilted, giving rise to fault bend folds. 该逆冲活动使合肥盆地东部边缘地层被明显掀斜并产生断弯褶皱。
"Evolution" was first used in Preformationism and then in Epigenesist, respectively, to describe the unfolding of preexisted miniature and the recapitulation of the forms of lower animals by the embryo of higher animals. Evolution一词先后被用在胚胎学的预成论和后成论中,分别用来描述预先存在的微缩体的展开以及高等动物胚胎对低等动物形式的重演。
Thirdly, aiming at the universality aspect, based on theory of software reuses, a schema reusing preexisted component to develop reasoning machine components for new connected scheme has been presented. 第三,针对操作票专家系统的通用性问题,提出利用组件的包容特性复用已有推理机组件构建新的接线形式的推理机组件的实现方案。
According to the traditional study on context, context was thought to be static and preexisted, thereupon it cannot illuminate the dynamic process of communication. 传统语境观将语境视为静态且先于交际而存在,从而不能解释动态的交际过程。但随着近年来语用学的飞速进展,语境研究方向也由静态语境观逐渐转至动态语境观。
However, because of the centralized management and control, the operation of the mobile communication network is relied on preexisted fixed network infrastructure. 但蜂窝移动通信网络的管理控制方式是集中式的,网络的运行要基于预先架设好的网络设施。