grade separation railroad bridge
grade separation railroad bridge
轨道桥
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The structural appraisement of a used grade separation railroad bridge is studied in this paper as a important reference in order to confirm the reuse of grade separation railroad bridge.
通过对某地道桥的结构鉴定，为该地道桥的可否再利用提供依据。
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