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汉语拼音：shí yóu lì qīng

暗褐色到黑色的固态或半固态的黏稠状物质。石油渣油经氧化而得。由高分子烃类和非烃类组成。常用于建筑和道路工程中。

• A heavy corrosion preventing petroleum pitch - polyurethane paint has been prepared.

  制备了一种石油沥青聚氨酯厚浆型重防腐涂料.

• Ageing of the asphalt coating was analysed with IR, DSC and TG.

  结合红外(IR) 、 差热分析(DSC)、热失重(TG) 测试手段分析石油沥青涂层的老化程度.

• Co - carbonization with petroleum pitch is of some advantage on economy.

  石油沥青共炭化在经济上具有一定的优势.

• Its practice shows the compatilizers of this kind can make and polyurethane well compatible.

  通过使用,表明该类相容剂能使石油沥青与聚氨酯预聚体有很好的相容性.

• A pitch mesophase can be prepared from petroleum pitch and coal tar pitch.

  从石油沥青和煤沥青中制取沥青中间相物质.

• Introduced petroleum pitch, especially the utility of road bitumen and the significant position in national economy.

  介绍了石油沥青, 非凡是道路沥青的用途及在国民经济中的重要地位.