北冰洋海域的冰雪正以超过平均速度的速度溶逝。
Arctic sea ice has also retreated at a faster than average rate.
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.
锌对焦炭的溶损反应具有正催化作用。
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