Preliminary Vacuum Pump
Preliminary Vacuum Pump
a vacuum pump that establishes the preliminary vacuum required for the normal operation of a pump providing a higher vacuum. Mechanical pumps are usually used for this purpose.
| 单词 | preliminary vacuum pump |
| 释义 | Preliminary Vacuum PumpPreliminary Vacuum Pumpa vacuum pump that establishes the preliminary vacuum required for the normal operation of a pump providing a higher vacuum. Mechanical pumps are usually used for this purpose. |
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