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national chemical measurement standard
释义
national chemical measurement standard
Encyclopedia
工学
〔化学计量基本概念〕
释
national chemical measurement standard
国家化学计量标准
由国家计量行政部门考核、批准,具有确定的量值或量值范围和相关联的不确定度,用于实现化学成分量、物理化学特性量等的单位或量值,检定或校准其他化学计量标准或工作计量器具,对社会实施计量监督并具有公正作用的一类国家计量标准。
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national bibliography
National Bibliography of New Books
National Biosafety Committee of Agricultural Genetically Modified Organisms
National bond guaranteed on import surtax
national bonds
National Book Award
National Book Design Art Exhibition
National Book Expo
National Books Museum of China
National Broadcasting Company
National Broadcasting Company, NBC
National Broadcasting Services of Thailand
National Bureau of Corruption Prevention
National Bureau of Economic Research
National Bureau of Standards
National Bureau of Statistics of China
national business cycle analysis
National Calligraphy and Seal Carving Exhibition
National Calligraphy and Seal Carving Exhibition for Young and Middle-aged Artists
National Campaign for China's Top Ten Museum Exhibitions
National Canal Museum
national capitalism of the transition period in China
National Center for Agricultural Bio-safety Sciences
National Center for Atmospheric Research(US)
National Center for Biotechnology Information
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