epidemical造句
2024年06月18日 13:29:02
In this paper, a discrete stage - structured
epidemical model is proposed and studied.
本文主要讨论了离散的阶段结构传染病模型.
OBJECTIVE To explore the administration measures of air condition usage in SARS
epidemical period.
目的研究传染性非典型肺炎流行期间综合性医院空调设施的管理.