isotope abundance

Determination of natural fractional isotope abundance ratio of boron in boron trichloride by infrared spectroscopy

三氯化硼中硼同位素天然丰度比的红外光谱测定

Boron isotope abundance of ( CH3) 2O · BF3 complex was measured under the same instrument conditions when 10B isotope was concentrated, with the relative standard deviation of 1.095%.

在同样的仪器条件下测定了硼同位素浓缩过程中样品三氟化硼甲醚络合物中的硼同位素丰度比，测定结果的相对标准偏差为1.095%。

Theory about Determination of Isotope Abundance by Thermal Ionization

热表面电离源同位素丰度测量的理论模型

Some Questions about Precise Measurement of Isotope Abundance of Uranium

铀同位素丰度精确测量的若干问题

What is more significant is that the dry cold oscillation event of the Younger Dryas has been detected accurately and distinctly. The temperature-lowering amplitude produced by fitting of the isotope abundance change may attain 11 C.

更为有意义的是，清晰准确地检出新仙女本期气候冷干颤动事件，用同位素丰度变化拟合的降温幅度可达11C；