结果表明，原材料存在浅表面微裂纹、夹杂气孔等冶金缺陷是导致裂纹产生的主要原因。
The result indicates that the surface light crackle and inclusion air hole est. metallurgy shortcomings are the main reason of causing crackle.
玻璃本身是一种高强度材料，由于受表面微裂纹的影响，玻璃的实际强度仅仅是其理论强度的几百分之一。
Glass is a kind of high-strength inorganic non-metallic material, but because of the micro-crack in the surface, glass actual strength is less one - percent of its theoretical strength.
通过X射线衍射分析（XRD）、扫描电镜（SEM）等观察分析了复合粉涂层表面形貌，分析了表面微裂纹和孔隙的形成过程。
Phases constitution, microstructure and element distribution of the coating were studied by X-ray diffraction(XRD), scanning electron microscope(SEM) and electron probe microanalysis(EPMA).
结果表明： 轧制表面层的粗晶、混晶和沿轧向的分层是引起表面微裂纹的重要原因，而氧与氮含量较高对冷弯性能有不利影响；
The microstructure was observed. The results show that the surface microcrack formation on container plate was mainly related to the gross grain and mixed grain in the surface of plate.
当与其它界面相接触时，玻璃的表面就会产生微裂纹，即使是水蒸汽或者二氧化碳也会带来微裂纹。
Tiny cracks begin to form through contact with other surfaces, or even with water vapor and carbon dioxide.
结果表明：等离子喷涂硅灰石涂层具有粗糙的表面和层状结构，涂层内部存在一些气孔和微裂纹。
The results indicate that the plasma sprayed wollastonite coating has a rough surface and lamellar structure including some pores and microcracks.
如果刀具参数选取得当，能在常规切削用量下获得在玻璃的塑性域内形成的、无微裂纹的加工表面。
Crack-free surface that is formed in ductile regime of glass can be obtained under conventional cutting conditions if the tool parameters are chosen properly.
实验还观察到砂岩表面微缺陷发生闭合的全过程，在冷却过程也有微裂纹形成等现象。
Also a closing course of initial crack and thermal cracking coming into being in the cooling process are observed in our experiment.
根据表面扩散控制下物质迁移规律，建立有限单元法，对裂面形貌扰动下二维微裂纹演变过程进行数值模拟。
Based on the theory of surface diffusion, a finite element method was developed to simulate shape evolutions of two-dimensional microcracks with surface perturbation.
同时玻璃表面存在大量微裂纹，当热应力达到临界值时，在热应力的作用下产生脆性断裂。
Since the surface of glass have many micro-crack, when the thermal stress reach the critical value, thermal breakage occur.
介绍了激光超声表面波的产生机理、微裂纹的检测方法及其应用。
The principles of laser generated surface acoustic waves (SAWs), the method of micro cracks detection and the applications are proposed.
随腐蚀反应的进一步进行，锆-4合金由于其表面形成大量微裂纹而出现加速腐蚀现象。
While extending the duration of corrosion sufficiently, the rate of corrosion was accelerated by the appearance of a large number of microscopic cracks on oxide surface.
随腐蚀反应的进一步进行，锆-4合金由于其表面形成大量微裂纹而出现加速腐蚀现象。
While extending the duration of corrosion sufficiently, the rate of corrosion was accelerated by the appearance of a large number of microscopic cracks on oxide surface.
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