| vacuum tube |
Electron tube evacuated to such a degree that its electrical characteristics are essentially unaffected by the presence of residual gas or vapor. Have been essentially replaced by transistors for amplification and rectification. Cathode ray tubes are still used as display devices.
출처: www.sciencelobby.com/dictionary/v.html
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| vacuum |
(1) air evacuation system that creates suction between a substrate and the printing base to hold the substrate in position during printing; (2) air removal system to draw heat softened plastic sheets to mold or die for forming.
출처: www.sgia.org/glossary/Vv.cfm
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| vacuum |
A vacuum is a space with no or very little gas pressure. VAN ALLEN, JAMES A. James A. Van Allen was an American physicist who discovered doughnut-shaped belts of radiation that circle the Earth (the van Allen Belts).
출처: www.allaboutspace.com/subjects/astronomy/glossary/...
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| vacuum |
Any pressure less than atmospheric pressure.
출처: www.weedinstrument.com/info_central/v.html
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| vacuum tube |
Another name for "electron tube".
출처: www.aikenamps.com/AmpTerms.html
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