羽毛长成
发表于 2025-3-26 21:09:28
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Nucleate
发表于 2025-3-27 02:30:17
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diabetes
发表于 2025-3-27 08:10:17
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大方不好
发表于 2025-3-27 10:06:24
Franz Ritteretween 1 and 10 mc/s, and in particular the alloyed transistor, today everywhere holds the field; higher frequencies up to 500 mc/s are attained with variants of the junction transistor such as the surface-barrier, the tetrode, the pnip, and the diffused transistor. The performance of the transistor
Intact
发表于 2025-3-27 15:55:43
R. Vaschetto,J. J. Haitsma,H. Zhangonstituent International Conference held in Stuttgart in August 1907. At the conclusion of the Conference, a permanent bureau of five members from different countries was elected and the headquarter of the new international Union was moved to Vienna, with the Austrian Robert Danneberg’s appointment as international secretary.
Hamper
发表于 2025-3-27 19:40:56
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