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飏扇
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飏扇
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winnower
飏扇(飏车)
由人力驱动产生风(气流)以清除谷物中颖壳、灰糠和瘪粒等杂质的一种中国传统农具。又称飏(扬)车、扬谷器、风扇车。
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radioactive contamination from[at] uranium mine
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radioactive contamination of fisheries environment
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radioactive contamination of groundwater
radioactive contamination of surface water
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