Civil Engineering. In the construction of roads and other flat load-bearing surfaces: the layer (typically the prepared natural ground) lying…
| 单词 | θ202656 |
| 释义 | society > travel > rail travel > railway system or organization > [noun] > track > permanent way > layer beneath foundations (1) subgrade1979 Civil Engineering. In the construction of roads and other flat load-bearing surfaces: the layer (typically the prepared natural ground) lying… |
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