Asphalt forms naturally when the light components or volatiles of petroleum have been removed or evaporated.
当石油的轻组分(或挥发分)被迁出或被蒸发即自然地形成沥青。
A significant technique named hydroforming, by which many hollow light components can be produced, is presented to balance the contrast.
内高压成形技术正是适应这种需求而提出来的一种制造空心轻体构件的新工艺。
Infrared spectrum tested asphaltine structure before and after reaction. Heavy components structure has changed after reaction, heavy components reduced and light components increased.
采用红外光谱对反应前后沥青质的结构进行了测定，反应后沥青质中重质组分的结构发生了变化，重质组分的减少，轻质组分的增多。
Infrared spectrum tested asphaltine structure before and after reaction. Heavy components structure has changed after reaction, heavy components reduced and light components increased.
采用红外光谱对反应前后沥青质的结构进行了测定，反应后沥青质中重质组分的结构发生了变化，重质组分的减少，轻质组分的增多。
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