The localizer is composed of two parts:a constant current constant frequency signal source and a signal detector.
装置由恒流信号电源和信号检测装置两部分组成。
Method Based on the digital frequency synthesis theory and FPGA, the main part of a multi-frequency signal source is accomplished.
方法：根据数字频率合成理论，基于FPGA实现了多频信号源的核心部分。
The hexahedron toy capable of being controlled in landing surface probability consists of hexahedron, resonator, frequency signal source and emitting coil.
一种可控制落地面概率的六面体玩具，由六面体、谐振器、频率信号源、发射线圈组成。
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