发布时间:2025-01-30 20:46:17
水泥的型号为PF32.5、PF42.5、PF52.5型号的水泥,这一规格型号的水泥和火山灰质硅酸盐水泥使用要求基本类似; 复合硅酸盐水泥的主要型号为PC32.5、PC42.5、PC52.5型号的水泥,这一规格型号的水泥应根据其混合材的比例选择使用。
怎么从建筑图纸的楼梯示意图就是平面图那种有个箭头指向上楼方向的看出是第一层还是顶楼或者是中间层呢
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