... acorn tube 橡实管 acorn valve 橡实管 acorn 木桅顶饰;柱头 ...
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... acorn worm 囊舌虫 acorn valve 橡实形电子管... acorn tube 橡形真空管 ...
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【无线电】橡实形(电子)管。 acorn tube; acorn valve ..
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N a small electronic valve, approximately acorn-shaped with small closely-spaced electrodes, used in ultrahigh-frequency applications 橡实形电子管
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