青云翻译

Site investigation is the study of exogenous chemicals on human health effects of exposure to the main method for determining the harmful effects of exogenous toxins is very important. (1) Descriptive epidemiology: assumptions made causes, to understand the severity of a known cause (2) analytical e

Field is the study of exogenous chemicals on the health effects of exposure methods, is vital to determine the harmful effects of exogenous toxins. (1) descriptive Epidemiology: make etiological assumptions and known-cause understanding severity (2) analytical Epidemiology: verify the hypothesis, es

The scene investigation is studies the exogenetic chemical material to contact the crowd health influence the main method, is extremely important to the determination exogenetic poison harmful effect.(1) descriptive epidemiology investigation: Proposes the cause of disease supposition, known cause o

On-the-spot investigation is the study of chemicals on the contact groups, health effects of the main methods for the determination of the harmful effects of toxic chemicals is extremely important. ( 1) descriptive epidemiological investigation: the assumption that illness, known causes serious exte

Field is the study of exogenous chemicals on the health effects of exposure methods, is vital to determine the harmful effects of exogenous toxins. (1) descriptive Epidemiology: make etiological assumptions and known-cause understanding severity (2) analytical Epidemiology: verify the hypothesis, es