英语词汇preasphaltene怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
The results show that in the initial phase of reaction, coal is mainly converted to preasphaltene, asphaltene and a little oil and gas.
研究结果表明：在反应起始阶段，煤主要转化为前沥青烯和沥青烯，有少量油气存在。
2
With the extend of time, the yield of preasphaltene and asphaltene reaches the maximum and the yield of oil and gas gradually increases.
随反应时间的延长，前沥青烯和沥青烯产率出现最大值，油气产率逐渐增加。

pre- +? asphaltene

FROM: wiktionary

单词	preasphaltene
释义	preasphaltene 简明释义预沥青烯网络释义 1 ?前沥青烯前沥青烯双语例句 1 The results show that in the initial phase of reaction, coal is mainly converted to preasphaltene, asphaltene and a little oil and gas. 研究结果表明：在反应起始阶段，煤主要转化为前沥青烯和沥青烯，有少量油气存在。 2 With the extend of time, the yield of preasphaltene and asphaltene reaches the maximum and the yield of oil and gas gradually increases. 随反应时间的延长，前沥青烯和沥青烯产率出现最大值，油气产率逐渐增加。词源 1 preasphaltene: pre- +? asphaltene FROM: wiktionary
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