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121002. r1r4r2r356v3. /4. 1. -23 2cm 8 2. 3. 1ms 0.17v 123 subthreshold stimulusthreshold stimulus - 100g 121hz0.1v1.5v33121.4v1hz12hz3 11 0.5v 8.0g2 2 111a. 0.5v0.5v0.5v,1.4g,b. ,8.0g. 2014 (nmes)1234 rm624012 (1)(2)345 / rm62404g0.1ms,4s,2v, 1hz2hz3hz? :xsstudent test1( :)1hz11hz21hz21hz12+2+h cah+ 3ca2+ca2+ca2+4a. (nmes)1982fdab. ,c. d. 5. 1 ;j;2006022 20093 , 2010-03-254 .5 , 832002 ; , 8300086 ,. j.: (),20087 .j.2001,(22):34-36.8 .2006.8139412021. 2. -1. 12msms2. 3. 1. 2. 3. -1. 2. 233. 2cm 8 1. 2. 500ms/div35mm-1.
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