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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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square rooting
square root method
square root operator
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square root transformation
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square-shaped array
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square-summable function
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square triangle picking
square-triangle theorem
square triangular number
square TV
square vertebral body
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square-wave modulation
square wave polarography
square-wave potential method
square wave voltammetry
square well
square well potential
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