发布时间:2025-02-02 20:49:58
根据钢筋计算公式确定,直径10mm的钢筋理论重量是0.617kg/m,其他规格的钢筋理论重量计算公式为=(d/10)*(d/10)*0.617kg/m,精度高,精确到0.001kg
海尔专卖店卖的商品与不是在专卖店卖的商品在商品质量上有差别吗
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