短語詞組短語Bid -ask k Spread 買賣差價(jià);買賣價(jià)差bid -ask E spread 遞磐虛磐差價(jià)relative bid -ask spread 相對(duì)買賣價(jià)差Decomposing of Bid -ask Spread 價(jià)差分解 返回 bid ask spread