... basalt 玄武岩玄武岩玄武岩底 bascule bridge 竖旋桥;活动桥 bascule bridge 竖旋桥活动桥 ...
基于16个网页-相关网页
... 敞车 open box wagon 活动桥 open bridge 箕斗式汽闸 open bucket trap ...
基于12个网页-相关网页
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bascule bridge
movable bridge
open bridge
traversing bridge
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movable bridge
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