lightweight aggregate的用法和樣例：
例句
- The composite aggregate is composed of LWA and normal aggregate.
複合骨料系混凝土中的普通骨料被輕骨料取代而成。 - The insulation value of the lightweight aggregate is only important in the roof insulation, which is greatly improved.
輕骨料的隔熱值只是對屋面的隔熱來說很重要，它可使屋面的隔熱性能大為改善。
辭彙搭配
- light weight 車輛自重,空車重量,...
