sand pebble soil
常见例句
- The model stratums mainly included miscellaneous filling soil surface, interaction stratum of silty clay, silt and fine sand and pebble round gravel at the bottom of station tunnel.
模型介质材料分别模拟地表杂填土层,粉质黏土、粉土、粉细砂互层和车站隧道底部的卵石圆砾层;
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