More reactive are the heavier isotopes of hydrogen, deuterium and tritium.
更为活跃的是氢的较重同位素，氘和氚。
isotopic continuous weighing device
同位素连续称重装置
Radionuclide tracer analysis is a third important method.
第三种重要方法是同位素示踪分析。
The large number of radioactive isotopes among the heavy elements fit into three series.
重元素中的大量放射性同位素分属于三个系列。
Sulfur Isotope of the Dahebian Barite Deposit,Tianzhu,Guizhou Province
贵州天柱大河边重晶石矿床硫同位素研究
THEORETICAL PREDICTION FOR SEVERAL IMPORTANT EQUILIBRIUM Ge ISOTOPE FRACTIONATION FACTORS
几个重要Ge同位素平衡分馏参数的理论预测
Speciation of Heavy Metals and Pb Stable Isotope Signatures in Urban Channel Sediments in Nanjing
南京市内河道沉积物中重金属元素形态及Pb稳定同位素组成
radioisotope localization of placenta
放射性同位素胎盘定位
radioisotope positioner
放射性同位素定位器
of or relating to or having the relation of an isotope.
属于、关于同位素的，或有同位素关系的。
isotopically tagged
同位素示踪的, 同位素标记的
Of or relating to an isotope with an atomic mass greater than the average mass of that element.
重的原子质量比该元素的平均原子质量重的同位素的或与之有关的
The fuel will be made from two heavy forms of hydrogen, called deuterium and tritium.
燃料由氢的两种较重的同位素制造，分别称为氘和氚。
Owing to the improvements on analytical and testing techniques, great progress has been made in research on Sr isotopes.
随着分析测试技术的不断提高，锶同位素研究取得了重大进展。
Heavy Metal Pollution Character in Soil-Plant System and Study on Lead Isotopic Tracing;
土壤—植物的重金属污染特征及铅同位素示踪研究
Same Space Dual-wavelength TEA CO_2 Laser and Multiphoton Dissociation and Isotope Separation of Boron;
空间重叠双频TEA CO_2激光与多光子离解分离硼的同位素
Some important Ge isotope equilibrium fractionation coefficients in organic-rich fluids
富有机物流体中一些重要Ge同位素的平衡分馏参数
Wavelet Decomposition and Reconstruction of Time Series of Oxygen Isotope in Rainfall Based on Wavelet Transformation
基于子波变换的降雨氧同位素时间序列分解及重构