Results of elec-tron probe analysis for the stria region show that increase of Nb~(5+) concentration in thestria region and deficient in Mg~(2+) in the boundary layer are the main causes for the for-mation of the growth striae.是什么意思_Results of elec-tron probe analysis for the stria region show that increase of Nb~(5+) concentration in thestria region and deficient in Mg~(2+) in the boundary layer are the main causes for the for-mation of the growth striae.在線翻譯_英語_讀音_用法_例句