发布时间:2025-01-20 11:58:52
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.
做一个底面直径是10 cm高是15 cm的无盖圆筒至少要多少平方厘米材料
2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52都说天然居硅藻泥产品不掉粉不知道是不是在真的想用他们家的硅藻泥来装修新房呢
2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52 2025-01-20 11:58:52