It analyses the rail transit DC traction power supply system voltage type frame protect device and rail voltage limited device matching problems that solve their adjusting value and time.

分析了轨道交通直流牵引供电系统的直流设备电压型框架保护装置与轨道电位限制装置定值和时间配合存在的问题及解决办法。

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This paper studies a new method that determines fluid transit time by automatically tracking the peak value of the software correlation device used for measuring two-phase flow.

本文探讨一种以单片机为核心的两相流测量用软件相关仪中自动跟踪峰值，以确定流体渡越时间的新方法。

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