v-roof 中文意思是什麼
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Specification for design and construction of v - style recurved roof cover
V型折板屋蓋設計與施工規程 -
Roof poles for lead - in cables, type n, degree of protection ip 40, for overhead power lines up to 1000 v
額定電壓1000v以下架空電力線用防護類型ip40 n型 -
Crossarms for roof poles for overhead power lines up to 1000 v
電壓1kv以下架空電力線路屋頂架線桿的橫擔 -
Crossarms for wooden poles and roof poles for overhead power lines up to 1000 v
額定電壓不超過1kv架空電力線路木質電線桿和屋頂架 -
Roof poles for overhead power lines up to 1000 v ; combination, components
額定電壓1000v以下架空電力線路用屋頂電桿.裝配零
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