GB/T 19812.4-2018塑料节水灌溉器材第4部分:聚乙烯(PE)软管国家标准
英文:Plastic equipment for water saving irrigation—Part 4:Polyethylene (PE) flexible pipe GB/T 19812.4-2018介绍: 国家标准《塑料节水灌溉...
英文:Plastic equipment for water saving irrigation—Part 4:Polyethylene (PE) flexible pipe GB/T 19812.4-2018介绍: 国家标准《塑料节水灌溉...