| 单词 | triode |
| 例句 | In the 1920s, once the vacuum tube and the triode had been developed, commercial radio that broadcast news, music, and radio plays became available as well. World History: from 1400 2022-12-14T00:00:00Z Numerous important inventions such as the crystal detector, the oscillating valve, the triode valve—have been due to private or amateur work. The Dawn of Amateur Radio in the U.K. and Greece: a personal view The kit consisted of a bright emitter triode in an oscillating circuit. The Dawn of Amateur Radio in the U.K. and Greece: a personal view He bought a triode valve called 'MICRO' and was told it had an amplification factor of 7. The Dawn of Amateur Radio in the U.K. and Greece: a personal view The transmitter was of French manufacture and consisted of two enormous triodes in a Hartley oscillator circuit. The Dawn of Amateur Radio in the U.K. and Greece: a personal view |
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