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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 17764-2008 |
Hydrometers - Principles of construction and adjustment 密度计的结构和校准原则 |
China National Standards Hydrometers |
 English PDF |
| GB/T 17763-1999 |
Technical requirements and test methodsof glass Hydrometers 浮计用玻璃的技术要求和试验方法 |
China National Standards Hydrometers |
English PDF |
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