Methods of test for dense shaped refractory products - determination of thermal expansion by a differential method 致密成型耐火制品试验方法.由差动法测定热膨胀性
Methods of test for dense shaped refractory products - part 19 : determination of thermal expansion by a differential method 致密成型耐火制品检验方法.第19部分:由差动法测定热膨胀性
Methods of test for dense shaped refractory products - part 19 : determination of thermal expansion by a differential method ; german version en 993 - 19 : 2004 致密成型耐火制品检验方法.第19部分:由差动法测定热
This paper analyzes detailedly the principles on distributed busbar protection - current instantaneous value differential method , impedance method , and put forward the new method of current fault component phase method , then compares with these methods 本文详细分析了分布式母线保护中的原理?瞬时值电流差动法、阻抗法,提出了电流故障分量相位法的新方法,将这几种方法进行比较。