1.
Advances in studying groundwater radioisotope dating methods
地下水放射性同位素测年方法研究进展
2.
isotopic age determination
同位素地质年龄测定
3.
isotopic dating of marine sediment
海洋沉积物同位素年代测定
4.
D/H Ratio Determination of Cellulose Nitrate from Tree Rings;
树木年轮硝化纤维素氢同位素组成的测定
5.
Study on the Method of Re-Os Dating for Black Shale and Oil Shale;
Re-Os同位素体系测定黑色页岩、油页岩年龄研究
6.
A Review on the Development of Re-Os Isotopic Dating Methods and Techniques
铼-锇同位素定年方法及分析测试技术的进展
7.
Measurement of geologic time, as through isotopic radioactive decay.
地质年代测定通过放射性同位素衰变来测定地质年代
8.
Determination of Triptolide in Different Ages of Root and Different Parts of Tripterygium wilfordii Hook f. by HPLC
HPLC测定不同采收年限雷公藤根及不同部位雷公藤甲素含量
9.
absolute isotopic abundance measurement
绝对同位素丰度测量
10.
relative isotope abundance determination
相对同位素丰度测量
11.
radioisotopic measuring method
放射性同位素测量方法
12.
radioactive isotope survey
放射性同位素监测仪
13.
Its diameter is about3000 meters, and the depth is250 meters.
它的直径约3000米，深约250米；据同位素地质年龄测定约七千万年。
14.
a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon 14.
用放射性同位素碳14测定有机物年龄的化学分析。
15.
Rb-Sr AGE DETERMINATION ON THE LATE ARCHEAN FERROSILICEOUS ROCK SERIES IN SIJIAYING,LUANXIAN,HEBEI
河北滦县司家营晚太古代铁硅质岩系的铷-锶同位素年龄测定
16.
In December 1978, the Pioneer Venus 1 probe and orbiter measured argon isotopes in the atmosphere of Venus.
1978年12月，金星先驱者1号探测器和轨道飞行器，测定了金星大气层中的氩同位素。
17.
ISOTOPE AGE OF PRINCIPAL MINERALIZATION PERIOD IN URANIUM DEPOSIT No. 460
460铀矿床主要矿化期的同位素年龄
18.
INFORMATION ANALYSIS OF ISOTOPIC GEOLOGY AGE DATA FROM NORTHWESTERN HUBEI
鄂西北同位素地质年龄数据信息分析