为了避免干扰，保持望远镜的灵敏度，无线电望远镜被建在没有人为的无线电波或电子信号的地方。
To avoid interferences, and keep the telescopes sensitive, radio telescopes are built in places where there are no human radio waves or electronic signals.
实验表明：该方法具有很高的灵敏度、很好的重现性，同时具有步骤简单、操作容易掌握、干扰少等特点。
Results show that this method possess very good sensitivity, very good repeatability, simple processing steps, easy to operate, less interference, etc.
结论：本方法操作简便，专属性强，灵敏度高，干扰小，结果准确可靠。
Conclusion: This method is highly exclusive and has a great advantage of simple and convenient operation, high sensitivity, low interference and reliable results.
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