发布时间:2025-02-06 14:38:49
请问DN50的管道395米,保温是25mm的橡塑换算成立方米及平方米分别是多少 ?公式是怎样的?谢谢!
DN50的管道内径是50mm,外径是60mm。保温25mm,换算成面积就是:3.14*0.06m*395m=74.418㎡。体积的计算式:3.14*0.06m*395m*0.025m=1.86
win7 64位操作系统天正2014无法加载到cad2014里面去即打开cad天正显示不出来怎么解决
2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49图纸中只有一处画出吊筋这个说明的意思是不是所有次梁处都有吊筋呢
2025-02-06 14:38:49 2025-02-06 14:38:49 2025-02-06 14:38:49