“epidemic link of parasitic disease”的概念、定义、翻译、参考文献-科学参考

单词	epidemic link of parasitic disease
释义	epidemic link of parasitic disease Encyclopedia 医学寄生虫病的流行环节释 epidemic link of parasitic disease寄生虫病的流行环节寄生虫病能够从一个个体传播给新的个体所必须具备的条件，即必须有传染源、传播途径和易感者三个条件，通常将之称为寄生虫病流行的三个环节。
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