2否定
发表于 2025-3-26 23:19:09
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Mortal
发表于 2025-3-27 02:33:17
ubstantial industrial base that existed for producing vacuum tubes disappeared -with one exception. That exception is, of course, the CRT, which is evident in televisions, computer displays, and a host of other information display terminals. Until recently, there was nothing that could take its place, and it 978-1-4899-2699-9
Gossamer
发表于 2025-3-27 09:10:47
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纹章
发表于 2025-3-27 12:06:53
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涂掉
发表于 2025-3-27 17:10:19
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高兴去去
发表于 2025-3-27 20:34:29
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