美[?ep?'dem?k?l] 1 . In this paper, a discrete stage - structured epidemical model is proposed and studied.
本文主要討論了離散的階段結構傳染病模型.
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2 . OBJECTIVE To explore the administration measures of air condition usage in SARS epidemical period.
目的研究傳染性非典型肺炎流行期間綜合性醫院空調設施的管理.
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1 . 傳染病的
epidemic 流行的epidemical傳染病的epidemiology 流行病學
2 . 三間
objective To study the morbidity rate , epidemicaldistribution , clinical symptoms and treatment of the cases bitten by red imported fire ants ( RIFA ) , and to provide the scientific evidence for disease control and prevention .目的了解吳川市Z村被紅火蟻咬傷病例的患病率、三間分
