数字脑电图仪含脑电地形图仪，是利用电极将人的大脑皮层的电活动提取并记录，从而对人的大脑及神经系统疾病进行诊断和治疗。
The digital EEG instrument is the use of that the electrical activity of cerebral cortex are extracted and recorded by electrodes, which diagnose and treat the human brain and nervous system.
电提取离子法在提取离子时是一个动态过程，提取量不但与提取时间有关，而且与指示电极的位置有关。
Extracting ion by electric extraction ionic method is a dynamic process, the extraction volume relates not only with extraction time but also with location of indicate extraction electrode.
现有的体表胃电信号提取方法是令病人取仰卧位，在胃的体表投影区放置若干电极获取胃电信号。
The present methods acquiring electrogastric signals from the surface of the abdomen is that the patient lies down in the supine position.
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