Methods of sampling and test for carbonaceous materials used in aluminium manufacture - electrodes - determination of electrical resistivity of cathode blocks and prebaked anodes at ambient temperature - section 3 . 6 determination of electrical resistivity of cathode blocks and prebaked anodes at ambient temperature 制铝工业用碳素材料的取样与试验方法.电极.室温下阴极碳块和预焙阳极电阻率的测定