This paper presents the differences between a new type of directly-buried rural cables and those specified by JB/T 2171.
介绍了新型农用直埋电力电缆系列产品与JB/T 2171标准界定产品的结构差异及特征。
Sulphur in expandable graphitede is determined using the way of determining Sulphur in JB/T 6623-93.
运用JB/T 6623-93中测定硫的方法，测定可膨胀石墨中的硫并取得满意结果。
Steel welding procedure qualification under the pressure of JB / T 4708-2000 determine the product of welding procedure qualification program, to complete the project welding procedure specification.
根据钢制压力焊接工艺评定JB/T 4708-2000确定产品的焊接工艺评定项目，完成焊接工艺评定项目说明书。
应用推荐