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Machinery and apparatus for isotopic separation , and parts thereof .

同位素分离机器、装置及其零件。

Formation of estopic and isotopic double double embryo grains in maize and their apomixis .

玉米异位双胚与同位双胚籽粒的来源及其无融合生殖性。

The trick they used to do this was to look at the isotopic composition of the oxygen in the wood of local trees .

他们所使用的办法是观测当地树木的木材中的氧同位素组成（isotopiccomposition）。

An isotopic analysis of the grains has made that fear come true .

一项对这些颗粒的同位素分析让这种担心成真了。

Isotopic model for commercial snf burnup credit .

商业乏核燃料燃耗可信度的同位素模型。