发布时间:2025-02-01 11:12:00
电缆套官的型号与电缆截面相关,也与成品外径.
一般来说,电缆的截面不得大于电缆套管的内截面40%.
电缆的截面=成品外径的平方*0.7854.
电缆套官的内截面=内径的平方*0.7854.
请问150个平方的咖啡厅中央空调需要放几个或者说放一拖几的中央空调
2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00装修时忘记预留幕布槽现在已经装修完吊顶和电视墙都是石膏板不能承重我有个想法就是买个手动幕
2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00 2025-02-01 11:12:00左邻右舍楼上楼下的钢琴等乐器的声音怎么在破坏小的情况下隔音呢
2025-02-01 11:12:00 2025-02-01 11:12:00