lightweight aggregate的用法和样例：
例句
- The composite aggregate is composed of LWA and normal aggregate.
复合骨料系混凝土中的普通骨料被轻骨料取代而成。 - The insulation value of the lightweight aggregate is only important in the roof insulation, which is greatly improved.
轻骨料的隔热值只是对屋面的隔热来说很重要，它可使屋面的隔热性能大为改善。
词汇搭配
- light weight 车辆自重,空车重量,...
