Objective To understand the epidemiological characteristics of HCV infection in various populations in Qingyuan City and provide scientific basis for formulating prevention and control measures.
目的了解清远市不同人群感染丙型肝炎病毒的状况及流行病学特征，为制定防控措施提供科学依据。
Conclusions to grasp species and distribution of rodents in Zhangjiakou basically, and to provide scientific foundations for drawing up prevention and control measures of rats harm.
结论基本掌握了张家口市啮齿动物的种类分布，为制订各种鼠害防治措施提供了科学依据。
This paper provides a scientific basis for the study of the mechanism of occurrence of the geological hazards in the area and measures for their prevention and control.
本文为该区域地质灾害的成灾机理及其防治措施的研究提供了科学依据。
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