... 牵引种类 kinds of traction 桥梁建筑限界 bridge construction clearance 森林铁路 forest railway ...
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To ensure the safety of navigation and bridge, it should be considered to calculate the minimum navigable clearance dimensions of bridge in bridge construction and channel construction.
合理地确定通航桥梁的最小净空宽度，保证船队航行和桥梁安全，是桥梁建设和航道建设均应重视的问题。
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