短語詞組短語Background And Current Situation 背景和現(xiàn)狀outward background potassium current 向外背景鉀電流background potassium current 背景鉀電流background d current 本底電流background inward current 背景內(nèi)向電流background na current 隱蔽鈉流background natrium current 隱蔽鈉流inward background sodium current 內(nèi)向背景電流sodium inward background current 鈉內(nèi)向背景電流 返回 background current