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GB/T 223.37-2020  China national standard english version:

　
GB
中华人民共和国国家标准
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 223.37-2020

Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
钢铁及合金 氮含量的测定 蒸馏分离靛酚蓝分光光度法
Issued Date:2020-06-02 　 Implemented Date:2021-12-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 223.37-2020
Standard Category China National Standards
GB Standard English Title Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation
GB Standard Chinese Title 钢铁及合金 氮含量的测定 蒸馏分离靛酚蓝分光光度法
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