短語詞組短語operation period cost 運營期成本Operation Business Cost 營運業(yè)務(wù)成本simple operation lower cost 操作簡單費用低operation fixed cost 固定運營成本daily operation education cost 日常辦學成本operation of cost control system 成本控制系統(tǒng)運行Low operation cost 運行成本低;低的運行費用Operation Cost Function 操作成本函數(shù);中的操作成本函數(shù)The lowest operation cost 簡單明了的中文界麪 返回 operation cost