In subgrade construction of railway engineering, the total cost of construction materials costs of more than 60%.

铁路工程路基施工中，材料费用占总施工费用的60%以上。

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In subgrade construction of railway engineering, the total cost of construction materials costs of more than 60%.

铁路工程路基施工中，材料费用占总施工费用的60%以上。

youdao