同位素对比 isotope comparison
同位素相对丰度 abundance ratio of isotopes ; relative isotopic abundance ; isotopic abundance ; fractional diffusion isotopic abundance
同位素的相对丰度 abundance ratio of isotopes
相对同位素质量 relative isotopic mass ; relative e isotopic mass
同位素相对分布量 relative isotopic abundance
绝对同位素丰度测量 absolute isotopic abundance measurement
相对同位素丰度测量 relative isotope abundance determination
相对同位素丰度 fractional isotopic abundance ; abundance relative isotopic
绝对同位素效应 absolute isotope effect
利用同位素对矿物质zh锶(这种矿物由人体从植物中吸收)的对比发现，他应该在地中海地区出生并长大。
And an isotopic comparison of the mineral strontium, which is absorbed by the body from plants, revealed that he was born and grew up in the Mediterranean.
为了调查皮肤对双酚a的吸收水平，研究者用放射性同位素对双酚a做了标志，观察放射性标志在猪耳朵皮肤内的活动——这是种广泛应用的代替人类皮肤的实验模式。
To investigate levels of skin exposure, the researchers took radioactively labelled BPA and observed the movement of radioactivity through pig ear skin - a widely used model for human skin.
对贝壳的同位素分析使得地质学家可以测量另一种冰川效应。
Isotopic analysis of shells allowed geologists to measure another glacial effect.
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