英语词汇“natural asphalt”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	natural asphalt
释义	natural asphalt natural asphalt [′nach·rəl ′as‚fȯlt] (geology) native asphalt natural asphalt Asphalt occurring in nature, produced from petroleum by natural evaporation or distillation; usually not suitable for paving purposes until refined and softened to proper consistency by combining with flux oil.
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