GB/T 39996-2021烟花爆竹烟火药发热量的测定标准
英文:Fireworks and firecrackers—Determination of calorific value of pyrotechnic powder GB/T 39996-2021介绍: 国家标准《烟花爆竹 烟火药发热量...
英文:Fireworks and firecrackers—Determination of calorific value of pyrotechnic powder GB/T 39996-2021介绍: 国家标准《烟花爆竹 烟火药发热量...