inlet unsubmerged culvert non-pressure culvert的意思|示意

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入口无淹涵洞无压涵洞


inlet unsubmerged culvert non-pressure culvert的网络常见释义

无压力涵洞 ...rt 半压力式涵洞 inlet unsubmerged culvert nonpressure culvert 无压力涵洞 inlet unsubmerged culvert non-pressure culvert 无压力涵洞 ..