钻采工具试验井的设计中体现了“性能先进、运行可靠、操作安全和维护便捷”的原则。
The principle is advance capability and credibility function and safety operation in the design of the drill and petroleum extraction tools.
提出VRLA蓄电池必要的维护项目，介绍VRLA蓄电池运行和试验数据的分析方法。
Necessary maintenance items are given. The data analysis methods for VRLA battery operation and test are introduced.
叙述了电容式电压互感器的结构和应用，介绍了其运行维护情况及电力现场试验。
This paper describes the structure and application of a capacitive voltage transformer and presents running attention and electric power field test.
应用推荐