发布时间:2025-01-24 05:11:19
比如箱涵,底板混凝土就是指箱体最下面的混凝土,在基础之上。还有比如空心板,底板混凝土指最下面的混凝土,先浇底板混凝土后再将内模放入绑扎钢筋,再浇腹板混凝土和顶板混凝土.
郑州市森林公园现在还有烧烤的地儿吗以前去过现在最近一年多都没去我们准备下午去呢急急急急
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