| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 40344.4-2025 | English | 274 |
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Vacuum technology - Standard methods for measuring vacuum-pump performance - Part 4: Turbomolecular vacuum pumps
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GB/T 40344.4-2025
| Valid |
GB/T 40344.4-2025
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