EN ISO 28139:2021/prA1 作物保护设备 背负式内燃机驱动的鼓风喷雾机 安全和环境要求及测试方法 修正案 1(ISO 28139:2019/DAM 1:2021)
Equipment for crop protection - Knapsack combustion engine-driven airblast sprayers - Safety and environmental requirements and test methods - Amendment 1 (ISO 28139:2019/DAM 1:2021)