| 1. | China national oil and gas exploration development co
中国石油天然气勘探开发公司 |
| 2. | Standard for petroleum and natural gas engineering drawings
石油天然气工程制图标准 |
| 3. | Classifications for petroleum resources reserves
石油天然气资源储量分类 |
| 4. | Hot - rolled wide strips for line pipe of oil and natural gas
石油天然气输送管用热轧宽钢带 |
| 5. | Safety signs for the special purpose of oil and gas production
石油天然气生产专用安全标志 |
| 6. | Petroleum is a kind of strategic resource of great importance
石油天然气资源是战略资源。 |
| 7. | Regulation of petroleum reserves estimation
石油天然气储量计算规范 |
| 8. | Oil gas exploration and development company
石油天然气勘探开发公司 |
| 9. | National energy strategy and oil amp; amp; gas transportation
我国的能源战略及石油天然气的输送 |
| 10. | Hot - rolled wide strips for line pipe of petroleum and natrual gas
石油天然气输送管用热轧宽钢带 |
