The core of the new manufacturing process for the high quality upgraded Manganese steel is fractionation modification, composite inoculation and microalloying technique, which are affected each other.
优质改性高锰钢生产新工艺的核心是将分级变质处理、复合孕育处理和微合金化技术三位一体，互为作用。
2
Oxygen isotope fractionation in amphiboles was determined by theoretical calculation using the increment method and by experimental measurement using isotope exchange technique.
利用增量方法和同位素交换技术，对角闪石族矿物的氧同位素分馏进行了理论计算和实验测定。
3
The classical subcellular fractionation methods coupled with mass spectrometry identification technique have created opportunities for the study of subcellular fractions.