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pipeline survey and design
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pipeline survey and design
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管道勘察设计
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pipeline survey and design
管道勘察设计
管道勘察与设计的统称,是油气管道工程建设重要环节,直接影响油气管道工程建设投资效益与质量安全,进而对国民经济发展产生重大影响。
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Ecological Engineering for the Rural Household Economy
ecological engineering in aquacultural ponds
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