并基于直流输电开发研究平台，对三相接地故障激发的铁心饱和不稳定现象进行了仿真研究，验证了该方法的正确性。

Then base on the former research platform, an simulation of the core saturation instability caused by three-phase grounding fault is processed, thus the new judgment method is validated.

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本文论述了微波衰减法测定圆柱状岩芯油、气、水三相饱和度的理论及其仪器构成。

In this paper, a theory and instrument for measuring three-phase saturations of oil, gas and water system in cores by microwave attenuation technique were discussed.

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本文将土体视作三相介质，对准饱和土中波的传播特性做了深入的研究。

Taking soils as three-phase medium, a study on wave propagation in nearly saturated soils is presented in this dissertation.

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