operational availability短语¹⁴⁴⁹⁷²⁺² 基本例句 工作可用性 Optimization models of armored equipment operational availability and maintenance support cost must be established in order to achieve availability objective under limited support cost. 要在有限的保障经费下实现高可用度要求,就必须建立装甲装备的使用可用度与维修保障费用的优化模型。 caesv