发布时间:2025-01-28 10:09:02
4000目和5000目过滤水区别大吗!
回答是:目数是指每英寸筛网上孔眼的数目,目数越大越精密,4000目和5000目过滤水区别大。
200m柏油路4米宽。20cm水稳。30底基,5cm油面造价和同等C30,25cm混凝土路面造价那个高
2025-01-28 10:09:02 2025-01-28 10:09:02 2025-01-28 10:09:02 2025-01-28 10:09:02 2025-01-28 10:09:02 2025-01-28 10:09:02