Then concrete is poured, and the sleeve is pre-embedded in the prestressed hollow floor slab;

然后浇筑混凝土，将套管预埋在预应力空心楼板内；

youdao

Then concrete is poured, and the sleeve is pre-embedded in the prestressed hollow floor slab;

然后浇筑混凝土，将套管预埋在预应力空心楼板内；

youdao