1 CECS 178 : 2019 ————————————————————————— 中国工程建设标准化协会标准 气水冲洗滤池 整体浇筑滤板及可调式滤头技术规程 (征求意见稿) Technical Specification for Integral Pouring Concrete Filter Floor and Adjustable Nozzle of Air-water Washing Filter 2 气水冲洗滤池 整体浇 筑滤板及可调式滤头技术规程 Technical Specification for Integral Pouring Concrete Filter Floor and Adjustable Nozzle of Air-water Washing Filter CECS 17