| 单词 |
open valley |
| 释义 |
open valley open valley[′ō·pən ′val·ē] (building construction) A valley formed at the intersection of two roof surfaces and lined with either metal or a mineral-surfaced roofing material; the lining is exposed at the intersection. open valley  open valley A type of valley on a roof. The valley formed at the intersection of two roof surfaces is lined with metal or mineral-surfaced roofing, and the shingles or slates are not laid |
| 随便看 |
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