等级 – phrases

Terms for subject Refrigeration containing 等级 | all forms | in specified order only

Chinese	English
冷库等级	class of cold storage
噪声等级数	noise rating number
性能等级评定条件	performance rating condition
洁净室空气洁净度等级	classification of clean room
空气过滤器的等级及评估	air filter rating and assessment
经济等级	economical rating
验收等级	acceptance level