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1 International Journal of Rock Mechanics and Mining Sciences Analysis of geo-structural defects in flexural toppling failure Abbas Majdi and Mehdi Amini Abstract The in-situ rock structural weaknesses, referred to herein as geo-structural defects, such as naturally induced micro-cracks, are extremely responsive to tensile stresses. Flexural toppling failure occurs by tensile stress caused
电气工程及其自动化专业英语翻译
Semiconductor switches are very important and crucial components in power electronic systems.these switches are meant to be the substitutions of the mechanical switches,but they are severely limited by the properties of the semiconductor materials and process of manufacturing. 在电力电子系统，中半导 体开关是非常重要和关键部件。 半导体开关将要替换机械开关 ,但半导体材料的性质和生 产过程严重限制了他们。 Switching losses 开关损耗 Power losses in the power eletr