... heptane insoluble matter 烷不溶物 n-heptane insoluble 正庚烷不溶物 Heptane,n- 正庚烷 ...
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结果表明，空气氧化和氮气热缩聚可提高石油沥青的软化点、焦产率和正庚烷不溶物含量。
The results showed that both methods of air blowing and thermal polycondensation in the presence of nitrogen raised the asphalt softening points, and increased coke yields and heptane insolubles.
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