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。
It's very important for some petroleum machinery(e. g. drilling rig and pumping unit) to carry on reliability analysis and design of the system of the narrow V type belt drive.
开展窄V带传动系统可靠性分析与设计对于提高钻机、抽油机等石油钻采机械的质量和效益具有重要意义。
The harms of sulfides come from many aspects to petroleum refining and product application, e. g. eroding metallic equipment, making catalyst poisoning, affecting on products output.
含硫化合物对石油加工及其产品应用的危害是多方面的，如腐蚀金属设备，造成催化剂中毒，影响产品质量等。
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