grade A甲级graden.等级；年级；成绩；斜坡v.分级；评分；渐次变化grade-distributed design级配设计Grade of anhydrite raw ore硬石膏原矿品位grade according to quality按质分等grade collection efficiency分级效率graded-based water supply分质供水grade of professional skill专业技术等级grade administrative system成绩管理系统grade separating efficiency分离级效率Grade of nickel concentrate镍精矿品位graded sand-stone mixture级配砂石