发布时间:2025-02-01 11:12:38
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.
墙壁潮湿变黑色了怎么办水泥墙把潮湿问题解决后想在墙壁上做木柜可以吗
2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38刚装修的房子 开门后墙体烈缝 不开门异味重 咋办 具体什时候房子才能完全凝固好
2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38 2025-02-01 11:12:38