四级生物安全实验室建设和运行的核心是净化系统。
The core of the construction and operation of the P3 and P4 biosafe laboratory is the purification system.
GB 50346 生物安全实验室建设技术规范[S]。 2004。北京：中国建筑工业出版社，2006。
GB 50346 Architectural and technical code for biosafety laboratories[S]. 2004. Beijing:China Architecture & Building Press, 2006.
目的为了客观、公正、科学、准确地评价生物安全实验室的建设效果，保障人民的公共卫生安全。
Purpose For the purpose of objectively, justly, scientifically, exactly evaluating the construct effects of biology security laboratory, and guaranteeing public sanitation safety.
应用推荐