Doublet fine structure results from spin-orbit coupling and the two possible relative orientations of s and l . 雙重精細(xì)結(jié)構(gòu)起源于自旋一軌道耦合以及S和L的兩個(gè)可能相對取向。
Is the rumored romance between dr . s and marci feld S醫(yī)生和馬爾西*菲爾德的緋聞
Once kirsten " s and my business is up and running , 一旦我和kirsten的生意經(jīng)營起來
What are the pro s and con s about network marketing 什么是親的和con的網(wǎng)絡(luò)營銷