裂纹

The major key of this technology is to assure the good quality and the less crack of thin slab.

其技术的重要关键是保证薄板坯具有良好质量，铸坯的裂纹缺陷较少。

Key words: sandstone; microcracks; wave velocity; mechanical properties

关键词］砂岩，微裂纹，超声波速度，力学性质

Because this arithmetic changes megillah into simpleness , it becomes possible to consider some fiber breaks at the same time in the crack core evolvement process.

该算法化繁为简，便于考虑裂纹扩展过程中多根纤维同时断裂这一因素。

Keywords Dynamic fatigue reliability;Metal structure;Crack;Crane

动态疲劳可靠性；金属结构；裂纹；起重机

Transverse cracks of S355 steel plate were studied by means of optical metallography microscope and electron probe microscope.

采用金相显微镜和电子探针分析了某批次S355钢厚板横向裂纹的微观特征。

Therefore, it is important to discover the existence of the microcrack in time before the marine accidents occur.

因此，在发生海损事故前，及时发现各构件存在的微裂纹是十分重要的。

It is put forward that microcrack in the material is the major reason for breaking.

提出材料表面的微裂纹是材料脆性断裂的根本原因。

A nonequilibrium statistical description of microcrack growth dynamic process has been given.

二、建立了微裂纹长大动力学过程的非平衡统计描述。

In order to understand the mechanism of the final stage of spallation deeply, we carried out computer simulations of the damage evolution of two-dimensional microcrack system.

为了深入研究层裂损伤后期的破坏机理，在实验研究和理论分析的基础上，进行了二维微裂纹系统损伤演化的计算机模拟。

A dissipative dynamic model of microcrack evolution is presented on base of a physical mechanism of growth-initiation-growth.

基于生长—触发—生长的物理机制，提出了一种耗散型微裂纹演化的动力学模型。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。