本论文以大量的野外调研为基础，结合现场试验和室内试验数据，对黄土暗穴的特征、成因机制、分布规律进行了较深入地研究。
Based on the field investigation and test data, this thesis studies profoundly on the characteristic, the origin mechanism and the characteristic of distribution of loess hidden cavity.
除了室内试验，还进行了野外现场观测试验。
In addition to laboratory experiments, field surveys were also adopted.
除了室内试验，还进行了野外现场观测试验。
In addition to laboratory experiments, field surveys were also adopted.
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