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楼主 |
发表于 2014-7-4 14:24
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来自: 中国山东青岛
At low temperatures, the ductility and fracture toughness decreases; the steel becomes brittle, increasing the likelihood of a catastrophic brittle fracture. Such fracturing is more frequent above the water-line where steel is exposed to very low air temperatures.
这就是水线以上板厚明显加大的原因吧!
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