A new method is introduced to determine the current density required for protecting an aged underground pipeline. The field test results show that this method is exact and practical.
研究一种确定旧管道阴极保护电流密度的新方法。现场试验结果表明，运用该方法确定旧管道阴极保护电流密度是准确实用的。
When coating surface resistivity test on a longer pipeline is conducted, the pipeline can be divided into several sections to calculate it with polarization potential and current density.
在对长管道的涂层面进行电阻率测量时，可将管道分成若干段，通过极化电位和电流密度对涂层电阻车进行计算。
The test showed that the simulated results were influenced greatly by the soak time after heating, the current density and the sample shape.
实验发现加热毕后停留时间、线圈的电流密度、试样形状等对模拟结果有很大影响。
The test showed that the simulated results were influenced greatly by the soak time after heating, the current density and the sample shape.
实验发现加热毕后停留时间、线圈的电流密度、试样形状等对模拟结果有很大影响。
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