短語詞組短語spin - decoupling 自旋–自旋解耦spin decoupling difference spectroscopy 自旋去偶差譜proton homonuclear spin decoupling 質(zhì)子同核自旋去偶proton spin decoupling 質(zhì)子去偶selective spin decoupling 選擇性自旋去偶 返回 spin decoupling