柯林斯詞典precast 1. ADJ (esp of concrete when employed as a structural element in building) cast in a particular form before being used (尤指建築用水泥)預澆制的2. V to cast (concrete) in a particular form before use 預澆制(水泥) 返回 precast劍橋詞典(especially of concrete ) formed into a particular shape and allowed to become solid before being used （尤指混凝土）預澆的，預制的 precast concrete slabs 混凝土預制板 返回 precast