电磁问题中有很大一类是研究天线和散射理论，即由封闭电路系统向空间开放系统的能量转换。
An analysis of the antenna and scattering theory is an important part in the electromagnetic problems, which describes the energy transformation from a closed circuit system to an open space system.
介绍了电路系统，包括微机部分、信号转换与处理电路、恒流源电路、测零电路等硬件。讨论了软件设计的有关问题。
The circuitry is described including single chip computer , signal converting circuit, constant current supply circuit and zero-detection circuit.
介绍了电路系统，包括微机部分、信号转换与处理电路、恒流源电路、测零电路等硬件。讨论了软件设计的有关问题。
The circuitry is described including single chip computer , signal converting circuit, constant current supply circuit and zero-detection circuit.
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