上述提到的產品都屬于石油蒸餾物.All of the above - mentioned products fall under the category of Petroleum Distillates.這使得蒸餾物中 A:B 比率發生緩慢的變化.This results in a slowly changing ratio A : B in the distillate....
試劑級, 醫藥級, 食品級, 化妝品級, 工業級等.Reagent grade, pharmaceutical grade, grade, cosmetics, industrial, and so on.滿城漢墓出土文物數量多, 品級高,文物科技價值和工藝價值高.Mancheng Han tombs excavated quantity, grade high heritage value and process - value te...