单词：coal tar pitch
coal tar pitch的用法和样例：
例句
- Mesophase microbeads were prepared from coal tar pitch by thermal condensation in atmospheric pressure.以煤焦油沥青为原料采用常压热缩聚工艺制备中间相沥青微球。
- 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。
- The experiments are done to develop globular activated carbon from coal pitch.摘要通过实验研究，利用煤沥青研制球形活性炭。
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