发布时间:2025-01-17 15:14:56
风阀符号旁带SE表示排烟口,接输入输出模块,平时常闭,联动打开并反馈,手动复位,280度熔断关闭。
风阀中圆圈带横线,表示风阀平时开闭状态,横线与风阀风道平行时表示平时常开,垂直时表示平时常闭。
装修的师傅把白色的填缝剂加入的什么东西 我怀疑可能是墨汁 现在瓷砖缝隙一沾水就掉黑色~~不知道怎么办了
2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56 2025-01-17 15:14:56双坡混凝土现浇屋面板坡度28单坡长425米横向660米屋脊处需要设折板梁吗
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