| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 9475-1988 | English | 319 |
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Days<=3
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Test method for granulometric distribution of alundum powder for vacuum tubes by density balance
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GB 9475-1988
| Obsolete |
GB 9475-1988
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