在半导体收音机中晶体管代替了真空管。
In semiconductor receivers transistors take the place of vacuum tubes.
即便当库兹韦尔将历史向后延伸至晶体管计算技术还未出现的上世纪初——即使用继电器和真空管的几十年间时,曲线依然表现出令人惊异的稳定性。
The curves held eerily steady, even when Kurzweil extended his backward through the decades of pretransistor computing technologies like relays and vacuum tubes, all the way back to 1900.
起初它被发明出来用于无线电信号的放大,这让你能够用晶体管收音机取代真空管收音机。
It was first developed to amplify radio signals, and you had transistor radios that replaced the vacuum tubes that were being used.
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