research of law-temperature frost-resistant concrete
...d design of inverted siphon in Baohe channel 15 低温防冻混凝土研究 Research of law-temperature frost-resistant concrete 15 有关潴龙河防洪的几个问题 A few problem about Zhulong river flood controling ..
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research of law-temperature frost-resistant concrete
低温抗冻混凝土的研究
以上为机器翻译结果，长、整句建议使用 人工翻译 。