1·The developed one has the characters of little residua content, low cost, fine endured temperature and quite torn glue. It can be satisfied with the requirement of fracturing technical design.
研究开发的低聚物压裂液体系，具有残渣含量少、成本低、耐温性能好、破胶彻底等特点，可以满足压裂工艺设计的要求。
2·A new process for producing roofing asphalt from petroleum residua by steam cracking and condensation has been studied in the laboratory.
在实验室中研究了一种从石油残渣油制取建筑沥青的新工艺——水蒸汽裂解缩合。