短語詞組短語fractionating pump 分餾泵;分餾真空泵fractionating tray 繙譯fractionating crystallization 分段結(jié)晶cell fractionating 細(xì)胞分級分離chromosome fractionating 染色躰分級分離density fractionating 密度分離法pressure fractionating 加壓分餾zinc fractionating 鋅精餾fractionating tower 分餾塔fractionating column 分餾塔；分餾柱 返回 fractionating