| 单词 | 接收机 |
| 释义 | 〔transponder〕A radio or radar transmitter-receiver activated for transmission by reception of a predetermined signal.发射机应答器：一种收到预定信号之后就开始发射信号的无线电或雷达发射接收机〔autodyne〕A heterodyne radio device in which one tube serves simultaneously as oscillator and detector.自差接收机：一种自差无线电装置，其中一只管能同时起到振荡器和检测器作用〔Lodge〕British physicist known for his pioneering work in radio receivers.洛奇爵士，奥利弗·约瑟夫：(1851-1940) 英国物理学家，以其在无线电接收机方面的创新研究而闻名〔teletext〕An electronic communications system in which printed information is broadcast by television signal to sets equipped with decoders.电视文字广播：一种电子通讯系统，打印的消息通过电视信号播送到配有译码器的接收机上〔preamplifier〕An electronic circuit or device that detects and strengthens weak signals, as from a radio receiver, for subsequent, more powerful amplification stages.前置放大器：电子线路或装置，用来探测并加强无线电接收机所发出的微弱信号，从而使其达到更加有力的增幅程度〔mayday〕"Mayday, mayday!” comes the international distress signal over the radio,and nobody stops to ask why the first of May is being mentioned at a time of crisis.Mayday, in fact, has nothing to do with the first of May. Instead, it is a spelling that represents the pronunciation of Frenchm'aidez, "help me,” or the latter part of the phrase venez m'aider, "come help me,” either of which are quite appropriate at such a critical juncture.“救命，救命!”无线电接收机中传来国际遇险呼救信号，总有人询问为何在危急时刻使用五月的第一天作为信号。实际上，Mayday 和五月份的第一天没有任何关系。 相反，它只是和法语中m'aidez “帮助我”或短语 venez m'aider “来帮助我”的后半部分的读音相同的一种拼写， 均适用于指紧要关头 |
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