| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| DB/T 3-2003 | English | 519 |
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Days<=4
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Classification and code of seismic observation item and observation item for earthquake precursor
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DB/T 3-2003
| Obsolete |
DB/T 3-2003
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