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羊痒病
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羊痒病
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农学
〔外来动物病 〕
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scrapie
羊痒病
自然发生于绵羊和山羊,以潜伏期长、剧痒、中枢神经系统变性、共济失调和病死率高为特征的慢性、传染性、致死性神经疾病。
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extensional relation
extensional set
extensional structure
extensional tectonics
extension axiom
extension calculus
extension chain
extension condition
extension field
extension filter
extension frequency
extension header
extension ideal
extension in phase
extension integral domain
extension module
extension monad
extension of a connection
extension of a differential field
extension of a division ring
extension of a domain
extension of a field
extension of a function
extension of a group
extension of a Lie algebra
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