发布时间:2025-02-06 15:08:26
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
这段时新房子在装修而我一直在为如何摇放床而苦恼因为有个带阳台的小房间床横放的话走路 都成问
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2025-02-06 15:08:26 2025-02-06 15:08:26 2025-02-06 15:08:26 2025-02-06 15:08:26