The Centers for disease Control says HEPA filters are effective in clearing the air of many particles that cause disease.
疾病控制中心认为高效微粒空气过滤器能有效的清理掉空气中很多可致病的微粒。
But studies have shown that high-efficiency particulate air (HEPA) filters on most jets today can capture 99.97% of bacterial and virus-carrying particles.
但研究表明，如今大部分飞机上的高效微粒空气过滤器能够滤掉99.97%的细菌和病毒微粒。
The first HEPA filters removed radioactive particles from the air.
第一台高效微粒空气过滤器可以消除空气中的放射性粒子。
The letters H-E-P-A represent the words High Efficiency Particulate air. HEPA filters capture almost all particles in the air that are zero point three microns in size or larger.
HEPA四个英文字母代表HighEfficiencyParticulateAir。高效微粒空气处理器能够捕捉到空气中几乎所有的微粒，即0.3毫米或者大一点的微粒。
The letters H-E-P-A represent the words High Efficiency Particulate air. HEPA filters capture almost all particles in the air that are zero point three microns in size or larger.
HEPA四个英文字母代表HighEfficiencyParticulateAir。高效微粒空气处理器能够捕捉到空气中几乎所有的微粒，即0.3毫米或者大一点的微粒。
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