precast concrete slabs的用法和樣例：
例句
- It was made of a large precast concrete panel.
這是由一大型混凝土預製板製成的。 - This new kind of slope protection can avoid some defects of traditional concrete prefabricated components and is worth of being spread in grit slope protection.
此種新型護坡結構可避免傳統混凝土預製板護坡的某些弊端，為砂堤護坡工程提供了具有實用價值的推廣方案。
