Receivers must be as noise-free as possible . 接收机必须尽量做到无噪声。
One transmission can send the same message to receivers . 一次传输能把同一信息发送给接收机。
The noise temperature is in the most favourable case given by the temperature of the receiver . 理想的噪声温度即是接收机的温度。
Ingenious circuits can be designed that correct for changes in the receiver sensitivity . 设计灵敏的电路,以便校正接收机灵敏度的变化。
We unpacked our attache cases, which contained our tools and a small radio receiver . 我们打开了我们的手提皮箱,里面装着我们的工具和一部小型无线电接收机。
Thirty-six hours after the watchers left london, the russian receiver monitoring their communication closed down . 监视员离开伦敦36小时之后,俄国人用于监听监视员通信的接收机就关机了。
The war had developed the technology and created a group of people trained to use the complicated early receiving sets . 战争发展了技术,也造就了一批经过训练能使用早期那种复杂的接收机的人员。
Most inventions basic to the construction of radio transmitters and receivers had been perfected before the first world war . 为建造无线电发射机和接收机奠定基础的大多数发明,在第一次世界大战前就臻于完善。
Most inventions basic to the construction of radio transmitters and receivers have been perfected before the first world war . 为建造无线电发射机和接收机奠立基础的大多数发明,在第一次世界大战前就臻于完善。
We have already seen that glint is an apparent movement of a target due to motion causing differential phase changes at the receiver . 我们早已了解,闪烁是目标的视在移动,这是由于目标的运动在接收机中引起不同相位变化的缘故。