将地球作接收引力波的天线物质，地球就成为了工作在低频段的引力波探测器。
Taken the Earth as material of antenna for receiving gravitational wave, the Earth behaves as a low-frequency gravitational detector.
分析了定向探测器的工作原理和目标方位识别的关键技术，并对探测天线的设计做了详细的分析和计算。
The work principle of directional detector and the key technique for identifying target bearing are analyzed. Design and calculation of detecting antenna have been carried out.
它们是为地面，天线，探测器塔和一个钢丝向定子的可变电容器。
They are for ground, antenna, detector tap and one wire to the stator of the variable capacitor.
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