阿拉伯石油输出国组织
Organization of Arab Petroleun Exporting Countries
OAPEC
Arab Organization of Petroleum Exporting Countries
Arab OPEC
automatic single-row harvester
石油输出国家组织
opalescence
Organization of Petroleum Exporting Countries (OPEC
OPEC
美国石油组织
american petroleum institute
中国石油石油勘探开发科学研究院
Research Institute of Petroleum Exploration and Development
PetroChina
中国石油石油勘探开发科学研究院西北分院
northwest sub-institute
Research Institute of Petroleum Exploration and Development
PetroChina
northwest branch
northwest institute
中国石油石油勘探开发研究院
Petroleum Exploration and Development Research Institute
PetroChina
beijing
跨国石油石化公司
multinational petroleum and petrochemical company
中国石油石化研究院兰州化工研究中心
Lanzhou Petrochemical Research Center of Chemical Engineering
PetroChina
朝鲜人民民主主义共和国石油工业部石油地质研究院
petroleum geology institute
d. p. k. korea
当代石油石化
petroleum & petrochemical today
法国石油公司
Compaynie Francaise des Petroles