leunghb 发表于 2013-12-10 09:37:00

MIL-E-1/781D 5 May 1975 Electron Tube, Thyratron Type 6D4

MIL-E-1/781D
5 May 1975

Electron Tube, Thyratron Type 6D4

admin 发表于 2013-12-10 10:13:53

谢谢您的分享，金币已奖励！
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