单词 | asphaltene |
释义 | asphaltene /as fawl"teen/ or, esp. Brit., /-fal"-/, n. Chem. any of the constituents of a bitumen, as asphalt, that are insoluble in pentane, hexane, or naphthalene. Cf. petrolene. [1830-40; ASPHALT + -ENE] |
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