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群体免疫
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群体免疫
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群体免疫
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herd immunity
群体免疫
根据某种传染病流行区域与人群发病等流行病学特点,在人群中进行大规模的疫苗或菌苗接种以预防和控制其传播流行的措施。又称社区免疫。
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airport aviation meteorological facility
airport cargo area
airport cargo warehouse
airport clearance zone
airport dedicated road
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airport economy
airport electromagnetic environment
airport electromagnetic environment protection
airport engineering
airport engineering survey
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airport integrated transportation system
airport integrated transport hub
airport layout planning
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airport navigation lighting management system
airport non-stop construction
Airport Opeation Center
airport parking facility
airport pavement
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