girder
n.
"main supporting wooden beam that carries flooring," 1610s, agent noun from gird, on notion of something that "holds up" something else. Used of iron bridge supports from 1853.
| 词汇 | girder |
| 词根词缀 | Online Etymology Dictionary girder n. "main supporting wooden beam that carries flooring," 1610s, agent noun from gird, on notion of something that "holds up" something else. Used of iron bridge supports from 1853. |
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