搜索 - 科创

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事实上，比强度和死重的相关性并不是特别好。有些铝合金的比强度媲美超高强钢，在发动机绝热技术成熟的今天为什么仍然没有广泛应用？就是因为实际强度低，达到同样耐压需要更大的壁厚（同时带来了更大的外径，导致壁...

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