... 超低频电磁信号 ultra-low frequency electromagnetic signal 超低频方法 very low frequency method 超低频噪声 ELF noise ...
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经测试表明，依照该方法可以设计实现噪声系数极小的超低频放大器，且性能稳定可靠，符合设计指标要求。
The experiment shows that using this method we can realize a SLF low noise amplifier with stable performances and meeting design requirements.
阐述SQUID的工作原理和噪声特性，分析其在超低频通信中的低温控制、环的正交性和混沌行为，为工程应用提供理论依据。
Then it presents the low temperature control techniques, the perpendicularity of the three loops and the chaos conduct of SQUID, which provides theoretical basis fort.
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