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National Standard Reference Data System
gen. 国家标准基准数据体系美
busin. 国家标准咨询数据系统
telecom. 美国全国标准参考数据系统
national standard reference data system
earth.sc. 国家标准参考数据系统美
el. 国家标准参考数据系统
 English thesaurus
National Standard Reference Data System
abbr., qual.cont. NSRDS
energ.ind., abbr. NRSDS

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