Hydrocarbon impurities in propylene were determined with capillary gas chromatography (GC) by using PLOT/ Al 2 0 3 quartz capillary column and flame ionization detector (FID).是什么意思_Hydrocarbon impurities in propylene were determined with capillary gas chromatography (GC) by using PLOT/ Al 2 0 3 quartz capillary column and flame ionization detector (FID).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句