美國ECI CVS電(dian)(dian)極(ji)鉑(bo)金(jin)電(dian)(dian)極(ji)、參比(bi)電(dian)(dian)極(ji)、參比(bi)內液(ye)、銅電(dian)(dian)極(ji)、不銹鋼電(dian)(dian)極(ji)等可供選擇