Terms for subject Quality control and standards containing 级

Chinese	English
中位数等级	median rank
低级的	offgrade
允收等级	acceptable rating
品级率	percentage of product grades
次级	substandard
等级分类	graded separation
质量控制等级	quality control level
质量检查等级	quality control level
较低级水准	lower level
配合等级	quality of fit
高级商务代表	high commissioner