Civil Engineering. In the construction of roads and other flat load-bearing surfaces: the layer (typically the prepared natural ground) lying…
| 单词 | θ200915 |
| 释义 | society > travel > means of travel > route or way > way, path, or track > road > parts of road > [noun] > layer beneath foundations (2) subgrade1849 Civil Engineering. In the construction of roads and other flat load-bearing surfaces: the layer (typically the prepared natural ground) lying… sub-base1876 Civil Engineering. A layer underneath the base layer of a road, pavement, or the like; spec. one immediately above the subgrade. |
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