Cold shuts and Cracks are the common defects found in thin-shell grey-iron castings.
冷隔、裂纹是薄壳灰铸铁件常见缺陷。
The formation of thin coal shell that is formed by aerofoil cracks engendered at the tip of primary cracks in the entry's surrounding coal is analysed.
分析了平巷煤壁中预存裂纹尖端产生翼型张裂纹，形成薄煤层壳，薄煤层壳弯曲变形失稳引发冲击地压的机理。
The causes resulting in cracks in back tube sheet of shell type boilers are analyzed. The mechanism of accidents is stated and some relative solutions to the problem are presented.
分析了锅壳锅炉后管板裂纹产生的原因，阐述了事故发生的机理和处理方法。
The causes resulting in cracks in back tube sheet of shell type boilers are analyzed. The mechanism of accidents is stated and some relative solutions to the problem are presented.
分析了锅壳锅炉后管板裂纹产生的原因，阐述了事故发生的机理和处理方法。
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