coal tar 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采用常壓熱縮聚工藝制備中間相瀝青微球。 - A pitch mesophase can be prepared from petroleum pitch andcoal tar pitch.
從石油瀝青和煤瀝青中制取瀝青中間相物質(zhì)。 - The experiments are done to develop globular activated carbon from coal pitch.
摘要通過(guò)實(shí)驗研究，利用煤瀝青研制球形活性炭。
