Petroleumacid in the fraction oil is the main reason that the fraction oil processing equipment to corrode, fraction oil product operational perform(?) nce unqualified.
馏分油中的石油酸是造成馏分油加工设备腐蚀，馏分油产品使用性能不合格的主要原因。
2
The reasons for price of acrylic acid being rapidly increasing are narrated, i. e. price increasing of petroleum in international market and implementation of anti-dumping twice at home.
分析了国内丙烯酸及丙烯酸酯价格飚升的原因：国际石油价格的上涨以及国内两次实施的反倾销措施。
3
Naphthenic acid alkanolamide was synthesized as flooding agent with petroleum naphthenic acid as starting material.