目的评价不同企业生产的医用外科口罩对细菌气溶胶阻留效果。

Objective to evaluate the efficacy of surgical masks produced by different enterprises in stopping bacterial aerosol.

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无菌工作服必须包盖全部头发、胡须及脚部，并能阻留人体脱落物。

The aseptic garments shall be able to cover completely hair, beard and feet and prevent body materials from being left.

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其净化机制主要表现在植物物理阻留、生理吸收和微生物作用等方面。

The purification mechanism mainly lies in the physical baffle, physiological absorption and microorganism action etc.

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