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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9820.1-2013 |
Horological vocabulary―Part 1: Technical and scientific definitions 计时学术语 第1部分：科学技术定义 |
China National Standards Horological |
 English PDF |
| GB/T 9820.2-2008 |
Horological vocabulary - Part 2: Technical and commercial definitions 计时学术语 第2部分: 技术和商业用定义 |
China National Standards Horological |
English PDF |
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