发布时间:2025-01-31 04:22:36
半径为12.56÷3.14÷2=2m
体积为π×2^2×2=8π 立方米
可以盛稻谷8π×600=4800π≈15079.64千克
我施工的道路混凝土雨水检查井井筒高度不够差5至10厘米强度够了如何进行补强
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