| 1. | The isotope ratio is directly used for comparing oils or gases .
同位素比率直接用于比较各种石油或天然气。 |
| 2. | An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers .
使用同位素比值法有着一个明显的局限因素，就是要用质谱仪进行分析。 |
| 3. | A lead isotope ratio data base of ancient chinese bronzes
夏商周青铜器铅同位素示踪研究数据库的构建 |
| 4. | The residue analysis in determination of sr isotopes ratio of carbonate
碳酸盐岩锶同位素比值测定中的残渣分析 |
| 5. | Isotope ratio measurement
同位素丰度测定 |
| 6. | Carbon isotope ratio
碳同位素比 |
| 7. | Research on the mineral sources of bronze vessels in shang - zhou by lead - isotope ratio
从铅同位素比值试析商周时期青铜器的矿料来源 |
| 8. | Argon isotope ratio
氩同位素比 |
| 9. | Comparative studies on pb isotope ratios of corrosion rinds and metal cores of bronze vessels
古代青铜器基体与其锈蚀产物铅同位素对比研究 |
| 10. | Method for the determination of c - 4 plant sugars in honey - stable carbon isotope ratio method
蜂蜜中碳- 4植物糖含量测定方法稳定碳同位素比率法 |
