biological National Standard Reference material
national reference standard
National Standard Reference Materials
NSRDS National Standard Reference Data System
the national standard sample
national standard reference data system
Plant standard reference sample
Standard Reference Sample
American National Standard
American National Standard Institute
American national standard labels
ammonia emission up to the national standard
ANSI， American National Standard Institute
Chinese National standard
中国国标
茧干燥机
中国国家标准
中国农业工程学会
国家标准
Chinese National Standard CNS
Chinese national standard code by section-position
Chinese national standard code for information int
Chinese national standard code for information interchange
current national standard