purlin
/ˈpɜːlɪn/noun
- a horizontal beam along the length of a roof, resting on principals and supporting the common rafters or boards檩（条）, 桁（条）。
词源
late Middle English: perhaps of French origin.
| 单词 | purlin |
| 释义 | purlin/ˈpɜːlɪn/noun
词源 late Middle English: perhaps of French origin. |
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