...室和外部环境的隔离,通过实验室建筑结构、通风空调、给水排水、电气和控 制系统来实现,又称之为二级屏障(secondary barriers)。
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(2)二级防护(secondary barriers) 实验室屏障设施,分四种不同结构。 不同生物安全防护级别实验室的应用 按照规范的实验室设计、实验设备的配置和个人防护装备的使...
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secondary protective barriers 次级保护屏障
Are the barriers intact? Clad, primary systems, secondary, containment.
这些障碍是完整的吗,覆盖层,主系统,次级系统,容器。
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"There is value in the market for very well-located retail assets in secondary markets, where there are high barriers to entry and good demographic fundamentals, " he says.
WSJ: Plots & Ploys: Hole-Sale Real Estate
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