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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| CJ/T 3069-1997 |
Units and symbols for city gas measurement 城镇燃气计量单位和符号 |
China Urban Construction industry
Standards Units symbols city |
 English PDF |
| CJ/T 3069-1997 |
Units and symbols for city gas measurement 城镇燃气计量单位和符号 |
China Urban Construction industry
Standards Units symbols city |
English PDF |
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