The Doppler frequency can be obtained as a heterodyne or beat effect.由于外差或频差效应,能够得到多普勒频率.That's a heterodyne receiver.那是外差式接收机.Function test and calibration self - heterodyne curve for direction finder on sea trial....
The intercom buzzed and he pressed down the appropriate switch.对讲机发出嗡嗡声，他按下了相应的开关。to announce sth over the intercom通过内部通话系统宣布The manager spoke to the employees over the intercom.经理用内部的通话系统向员工讲话....
嘲笑声的背后潜伏着一种越来越强烈的不安。Behind the mocking laughter lurks a growing sense of unease.他强烈要求保留北大西洋公约组织以维护和平。He argues strongly for retention of NATO as a guarantee of peace.心头涌起一阵强烈的感情，模糊了他的判断力。A tide of emotion rose and cloude...
他划掉了“编剧”二字，改为“作者”。He crossed out "Screenplay" and put "Written by" instead.周四晚上9点英国广播公司电视二台开始播放他的新连续剧。He begins his new series on BBC 2 at 9pm on Thursday.问他懂哪些英文词，塞姆科先生不假思索地回答：“一，二，三。”Asked what English he knew, Mr Semk...