preasphaltene

preasphaltene

美 　英

• 網絡前瀝青烯；預瀝青烯

例句

The results show that in the initial phase of reaction, coal is mainly converted to preasphaltene, asphaltene and a little oil and gas.

研究結果表明：在反應起始階段，煤主要轉化為前瀝青烯和瀝青烯，有少量油氣存在。

With the extend of time, the yield of preasphaltene and asphaltene reaches the maximum and the yield of oil and gas gradually increases.

隨反應時間的延長，前瀝青烯和瀝青烯產率出現最大值，油氣產率逐漸增加。