GB/T 19812.2-2017塑料节水灌溉器材第2部分:压力补偿式滴头及滴灌管国家标准
英文:Plastic equipment for water saving irrigation—Part 2: Pressure compensating emitter and emitting pipe GB/T 19812.2-20...
英文:Plastic equipment for water saving irrigation—Part 2: Pressure compensating emitter and emitting pipe GB/T 19812.2-20...