单词	perflation--ventlation
释义	ventlation;perflation通风；换气
随便看	monochromating crystal spectrometer monochromating crystal--spectrometer monochromatism monochromatisms monochromatization monochromatize monochromatizing monochromatophile monochromatophile，monochromatophilic monochromatophilic monochromatophilic--monochromatophile monochromator monochromator, chopper monochromator, crystal monochromator, mechanical monochromator-- mechanical monochromator, neutron monochromator, rotating monochromator-- rotating monochromators monochromators for neutrons monochromator， chopper monochromator， crystal monochromator， mechanical monochromator， neutron