artificial light weight aggregate concrete 人工轻骨料混凝土

weight aggregate index number 加权综合指数

light-weight aggregate 轻集料

light weight aggregate concrete 轻骨料混凝土

artificial light-weight aggregate 人造轻骨料

artificial light weight aggregate 人造轻质集料

variable weight aggregate 变权综合

polystyrene weight aggregate 聚苯乙烯轻质骨料

Pumice light-weight aggregate 浮石轻骨料

high-strength light-weight aggregate 高强轻集料