IEC 60754-2:1991 Test on gases evolves during combustion of electric cables-Part 2: Determination of degree of acidity of gased evolved during the combustion of materials taken from electric cables by measuring PH and conductivity. IEC 60754-2:1991 电线电缆燃烧时释放出气体的试验,第2部分用测量PH值和导电性方法对电缆中的材料燃烧时释放出气体的酸度的测试.