英语词典
The embankment model was built, and the thermo-mechanism was studied to protect permafrost by the effects of Balch and natural convection in the coarse gravel layer.
根据粗砾石的Balch效应和级配改良粗粒层自然对流效应,分析级配改良结构性路基保护多年冻土的热学工作机制;
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