词汇	opening ratio
释义	opening ratio 开孔比
随便看	secondary emitters secondary emitting reflector secondary employment Secondary Empty Sella Syndrome secondary empyema secondary enamel secondary enamel cuticle secondary end secondary ending secondary end of a session secondary endosperm nucleus secondary endosymbiont secondary endosymbiosis secondaryenergy secondary energy secondary energy source secondary energy sources secondary energy storage secondary engine secondary enlargement secondary enrichment secondary enrichment medium secondary enrichment zone Secondary entities secondary entoderm