常見(jiàn)例句用作名詞 (n.)Lee de Forest reads a paper before an AIEE meeting on the Audion, first of the vacuum tubes that would make long distance radiotelephony possible.電子管的首次使用將使長(zhǎng)途無(wú)線電話(huà)變?yōu)榭赡堋?/li> 返回 radiotelephony