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群体免疫
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群体免疫
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医学
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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double beam optical-null infrared spectrophotometer
double-beam photometer
double-beam polarimeter
double beam spectrophotometer
double-beam spectrophotometer
double-beam system
double-belt press
double beta decay
double beta-decay
double blind experiment
double-block ballastless track
Double-bodied Vessel of the Sui Dynasty from Pingdu
double bond
double bond migration
double bridge
double bubble
double-bubble conjecture
double capsule technique
double category
double censoring
double certificate system
double-chain complex
double-chain condition
double channel sampler
double character group
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