中英

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club

n. 俱乐部,社团;夜总会;棍棒;(扑克...

verb

n. 动词;动词词性;动词性短语或从句 | ad...

300b
  • 翻译

300 b

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  • 英英释义
  • abstract:
    • 1

      In electronics the 300B is a directly-heated power triode vacuum tube with a four-pin base, introduced in 1938 to amplify telephone signals. It measures 6.