发布时间:2025-01-20 03:00:39
钢筋: (300*4/1000)+(1.5*4/1000)=3.6吨
混凝土:(300*4*1.2/10000米)+(1.5*4/10000米)=3.84吨
(300*4+1.5*4)*25kg/㎡=30.0吨
石头:30吨
沙子: 7.5 吨
屋顶的无动力风帽坏了风球转不动了搞的我们一栋楼的人每天都被油烟味熏死绝对不用风球了换哪种
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