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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 19956.2-2005 |
Positive-displacement cacuum pumps-Measurement of performance characteristics Part2:Measurement of ultimate pressure 容积真空泵性能测量方法 第2部分：极限压力的测量 |
China National Standards Part2:Measurement |
 English PDF |
| GB/T 19955.2-2005 |
Vapour vacuum pumps-Measurement of performance characteristics Part2:Measurement of critical backing pressure 蒸汽流真空泵性能测量方法 第2部分：临界前级压力的测量 |
China National Standards Part2:Measurement |
English PDF |
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