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- digital radio signal 数字射频信号
- A radio signal tells the pilot of an airplane when his plane is off the beam. 飞机脱离航道时，会有一个无线电信号告诉驾驶员。
- A radio signal was sent to the spacecraft. 向宇宙飞船发出了无线电信号。
- An electronic device that converts one frequency of a radio signal to another. 变频器将无线电讯号从一种频率转换成另一种频率的电子装置
- We couldn't locate the source of the radio signal. 我们无法确定无线电信号的来源。
- A radio signal travels very quickly. 无线电信号传播得很快。
- The radio signal can be amplified. 无线电的信号可以放大。
- The FM radio signal is somewhat like light. 多重通道FM无线电信号是有些象光。
- A second part is the transmission link-a radio signal. 第二部分是传输线路--无线电信号。
- This radio signal has a frequency of 800000 cycles per second. 这个无线电讯号的频率是每秒八百千周。
- As we drove into the mountains, the radio signal faded. 当我们驶进山区时,无线电信号渐渐减弱了。
- The scanner emits a low-frequency radio signal, activating the microchip. 扫描仪会发出一些低周波的无线电信号，来激活微芯片。
- DRM(Digital Radio Mondiale) is a digital audio broadcasting system for the frequency below 30 MHz. 全球范围的数字广播系统DRM(Digital Radio Mondiale),是一种针对30MHz以下频段的数字声音广播系统。
- Siemens is proud to present the secure digital radio communication system TETRA (Terrestrial Trunked Radio). 西门子隆重推出安全的数字无线通信系统:TETRA数字集群通信系统.
- The ship gave out radio signals for help. 船发出无线电信号求助。
- A new digital radio frequency memory(DRFM) system architecture based on digital channelized receiver is introduced. 提出一种基于数字信道化接收的数字射频存储(DRFM)系统设计方法。
- Tall buildings can distort radio signals. 高楼会破坏无线电信号。
- The satellite is sending out radio signals. 卫星正在发射无线电信号.
- The maximum extent or distance limiting operation, action, or effectiveness, as of a projectile, an aircraft, a radio signal, or a sound. 射程，音程导弹、飞行器、无线电信号或声音等所能达到的限制运行、行动或效果的最大范围
- DRM (Digital Radio Mondiale) is a flexible digital sound broudcasting system for terrestrial broadcasting in bands below 30MHz. 数字调幅广播DRM(Digital Radio Mondiale)系统是1999年世界上几十个国家广播机构联合开发的应用于30MHz以下频段的地面数字声音广播系统。
