频谱激电测量仪器关键技术研究及实现  | 
	
| 石加玉, 郭鹏, 李勇 | 
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			 Research and implementation of key technologies of spectral induced polarization instruments  | 
	
| SHI Jia-Yu, GUO Peng, LI Yong | 
| 图2 同步时钟、发射电流和接收电压时序图 | 
	
| Fig.2 Timing diagram of synchronous clock, transmitting current and received voltage | 
	
			 
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