The principal source of infection were Marmota himalayana(72. 72%)and,Ovis aries(18. 18%)infected with causative a-gent of plague,while contacting with infected animals directly was the main route.
英
美
释义
传染源主要是染疫喜马拉雅旱獭(Marmzotahimalayana),占72.;72%25,藏系绵羊(ovisaries),占18。 18%25;
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载