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to originate from; to reveal the origin of something; to obtain from a particular supplier
hire
source
propose
present
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vacuum tube or evacuated tube?



 
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vacuum tube or evacuated tube? #1 (permalink) Sun Jan 20, 2008 1:59 am   vacuum tube or evacuated tube?
 

Hi,could you please tell me what's the difference between'vacuum tube'and 'evacuated tube'?

Thanks

Edwin
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vacuum tube or evacuated tube? #2 (permalink) Sun Jan 20, 2008 10:21 am   vacuum tube or evacuated tube?
 

.
They seem to be the same. Wikipedia has a drawing of one with the caption: 'Evacuated (or vacuum) tubes panel'.
.
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