... roof ventilator ==> 屋顶通风器,车顶通风器 roof weir ==> 屋顶式坝 roof weir gate ==> 屋顶式闸门 ...
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roof weir gate 屋顶式闸门
roof-weir gate 屋顶堰闸门
·2,447,543篇论文数据，部分数据来源于NoteExpress
When Duplat and Weir climbed on the roof of a building at the camp, they were stunned by what they saw.
CNN: 250,000 Somalis flee dangers of capital for sprawling camp
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