petroleum pitch

常見(jiàn)例句

雙語(yǔ)例句

• A pitch mesophase can be prepared from petroleum pitch and coal tar pitch.
  從石油瀝青和煤瀝青中制取瀝青中間相物質(zhì)。
• The failure forms, causes and methods to appraise petroleum pitch coatings are summarized in the present paper.
  文章概述了瀝青外覆蓋層保護(hù)失效的形式、機(jī)理與評(píng)價(jià)方法。
• This article mainly introduces the preparation of petroleum pitch coal additive agent and the slurring ability of coal on adding petroleum pitch.
  主要介紹了石油瀝青水煤漿添加劑的制備和在煤中摻入石油瀝青的制漿性能。
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