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QTLhyGmBDRzilcWFEDFXrQlpTWCORUi 生物安全柜向内气流的前开口对人员起到保护作用,垂直向下的HEPA(ULPA)过滤层状气流可保护产品,污染的气流经过HEPA(ULPA)过滤器过滤后可保护环境。" />