of structural members especially of concrete; cast into form before being transported to the site of installation
precast详细解释
pre.cast adj.（形容词）Relating to or being a structural member, especially of concrete, that has been cast into form before being transported to its site of installation.预浇的，预铸的：与建筑结构有关的或处于其中的（尤指水泥），在运到安装地点以前就已浇铸成形的 【引伸】 precast. v.（动词）
