| 1. | Radio astronomy today is armed with the largest antennas in the world .
射电天文学拥有世界上最大的天线。 |
| 2. | The radio flux is extremely variable, exhibiting erratic outbursts .
射电流量变化极大，显示出无规则爆发。 |
| 3. | In none of these respects does optical astronomy have any advantage over radio astronomy .
在所有这些指标上，射电天文并不比光学天文逊色。 |
| 4. | 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。 |
| 5. | Much data can be obtained by measuring the dispersion of cosmic radio waves passing near the sun .
测定穿过太阳附近的宇宙射电波的色散度也可以获得许多资料。 |
| 6. | First of all there are the remarkable achievements of a molecular radio spectroscopy in these clouds .
首先应说到的是分子射电频谱学研究这些云所取得的显著成就。 |
| 7. | Only radio, near-infrared, and visible light waves can be studied within the earth's atmosphere .
在地球的大气层以内，只能对射电波、近红外波和可见光波进行研究。 |
| 8. | Comparatively rudimentary interferometer observations suggested that this source is about 1. 5 across .
不很精确的射电干涉仪观测表明，这个源的角径约为15弧秒。 |
| 9. | These sources are generally viewed in projection against radio nebulae representing the remnants of supernova outbursts .
这类源一般都投影在超星爆发残骸的射电星云上。 |
| 10. | Ironically, the detailed reasons as to how the radio beam is produced may not be important astronomically .
具有讽刺意义的是，产生射电波束的详细原因在天文上，这也许并不重要。 |
