coaltar pitch的用法和樣例：
例句
- Mesophase microbeads were prepared from coal tar pitch by thermal condensation in atmospheric pressure.
以煤焦油瀝青為原料採用常壓熱縮聚工藝製備中間相瀝青微球。 - Boron-substituted polyaromatic mesophase was prepared by co-pyrolysis of a coal tar pitch with pyridine-borane complex under autogeneous pressure.
以煤焦油瀝青和吡啶硼烷為原料採用加壓熱縮聚工藝製備硼取代聚芳烴中間相瀝青。
