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.是什么意思_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.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句