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The metal corrugated pipe culverts have more advantage than normal concrete culvert especially in high - cold area.
特别是在寒区工程中,应用波纹管涵洞更显其优越性.
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Heilongjiang Province in high and cold area, and most of the textile factories are closed buildings.
因我省地处高寒地区, 纺织厂厂房多为封闭式.
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