More than that, at thoroughfare, bridge crossing engineering, permeable spur dike useful for fence bed, led mainstream through the medium of bridge opening.

  • 不仅如此,在道路、桥渡工程中,丁坝可用于防护路基,引导主流通过桥孔。

  • 互联网摘选 2025-01-20 12:36:38

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