GB/T 28552-2012《变压器油、汽轮机油酸值测定法(BTB法)》

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-1

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-2

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-3

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-4

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-5

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-6

GBT-28552-2012-变压器油、汽轮机油酸值测定法(BTB法)-7