| 1. | A second part is the transmission link-a radio signal .
第二部分是传输线路--无线电信号。 |
| 2. | There may be a "black out" of radio signals over a large area for several hours .
在大面积上的无线电讯号可能发生数小时的停顿。 |
| 3. | The longer wavelengths of radio signals pass through the atmosphere relatively undisturbed .
相对地说来，波长较长的射电讯号在通过大气时并没有受到干扰。 |
| 4. | The explosives in challenger's self-destruct system might have been set off by a stray radio signal .
“挑战者”号的自毁装置中的炸药可能是由偶然出现的无线电信号引起爆炸的。 |
| 5. | This is found by observing the doppler shift in the frequency of the radio signals broadcast from the satellite .
这是通过观测卫星所发射的无线电信号频率中多普勒偏移来确定的。 |
| 6. | We couldn ' t locate the source of the radio signal
我们无法确定无线电信号的来源。 |
| 7. | A : didn ' t you send out radio signals for help
你们没有发无线电信号求救吗？ |
| 8. | Didn ' t you send out radio signals for help
你们没有发无线电信号求救吗？ |
| 9. | A second part is the transmission link - a radio signal
第二部分是传输线路- -无线电信号。 |
| 10. | We ' re trackingyour radio signal right now
我们正在追踪你的无线电信号 |
