petroleum pitch

常见例句

双语例句

• A pitch mesophase can be prepared from petroleum pitch and coal tar pitch.
  从石油沥青和煤沥青中制取沥青中间相物质。
• The failure forms, causes and methods to appraise petroleum pitch coatings are summarized in the present paper.
  文章概述了沥青外覆盖层保护失效的形式、机理与评价方法。
• This article mainly introduces the preparation of petroleum pitch coal additive agent and the slurring ability of coal on adding petroleum pitch.
  主要介绍了石油沥青水煤浆添加剂的制备和在煤中掺入石油沥青的制浆性能。
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