wasteman废物清洁工
wasten.废物;浪费;荒地v.浪费;滥用;消耗adj.荒芜的;无用的;浪费的
waste household appliances废旧家电
wastewater containing lead含铅废水
waste non-ferrous metals废旧有色金属
Waste piezoelectric plates压电陶瓷废片
waste expanded polystyrene废旧聚苯乙烯
wastewater treatment agent废水处理剂
wastewater from car washer洗车废水
waste incineration process垃圾焚烧