precast floor unit

例句：

1. 1.The precast floor unit is easy to install and requires minimal maintenance.
   预制地板单元安装简便，维护需求低。
2. 2. The architect designed the precast floor unit to fit seamlessly into the existing structure.
   建筑师设计了预制地板单元，使其与现有结构完美融合。
3. 3. The precast floor unit is a popular choice for commercial buildings due to its durability and cost-effectiveness.
   由于其耐用性和成本效益，预制地板单元是商业建筑的热门选择。