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- directional radio radiation 无线电定向发射
- We directed radio waves around the globe. 我们向全球发射无线电波。
- A directional radio and television antenna consisting of a horizontal conductor with several insulated dipoles parallel to and in the plane of the conductor. 八木天线一种定向的收音机或电视的天线，由与水平的避雷针平行的几个绝缘振子和绝缘平面组成
- They had no direct radio link with aircraft but used telephones to stay in touch with airline dispatchers, airway radio operators, and airport traffic controllers. 他们不与飞机建立直接的无线电联络，而是同航空公司签派员、航路电台工作人员和机场管制员保持联系。
- calibration of celestial radio radiation 天体射电的定标
- radio radiation from the nucleus of galaxy 星系核射电
- slowly varying component of solar radio radiation 太阳缓变射电
- galactic background radio radiation 银河背景射电
- Low Frequency Omni Directional Radio Range 低频全向无线电信标
- Non Directional Radio Homing Beacon 无方向性无线电归航信标
- revolving directional radio beacon 旋转定向无线电导向台
- Directional Radio Beacon Station 定向无线电信标台
- When Clementine directed radio waves at permanently shadowed regions near the moon's south pole, the reflected signals were characteristic of an icy surface. 当克莱门蒂号在月球南极附近的终年阴影区侦测到无线电波，反射的讯号具有冰覆表面的特徵。
- Solar Radio Radiation Events Occurred in the Meter Waver Band 发生在米波段的太阳射电辐射
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- This entity (VCC) manages the communication within and outside the venue by receiving, monitoring and directing radio transmissions, telephone calls, messages, faxes, weather reports and VIP movement. 这个机构（VCC）通过接收、监控和指导无线电传输、电话、信息、传真、天气预报和贵宾的活动情况来管理场馆内外的通信活动。
- Observational Features of the Fast Activities of Solar Radio Radiation 太阳射电快速活动的观测特征
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- Keywords Radio radiation;ISM;HII region;jets and outflows;star formation; 射电辐射;星际介质;电离氢区;喷流和外向流;恒星形成;
- He has chosen the most direct route. 他选取了最直的路线。
