petroleum asphalt

• 石油沥青

petroleum asphalt的用法和样例：

例句

1. A pitch mesophase can be prepared from petroleum pitch andcoal tar pitch.
   从石油沥青和煤沥青中制取沥青中间相物质。
2. The properties of the one component asphalt based polyurethane waterproof coatings were introduced.
   介绍了这种单组分石油沥青聚氨酯防水涂料的性能。