GB/T 35030-2018.Determination methods for launching height，launching deflection angle and radiation ...
GB国家标准
GB国家标准
GB国家标准
GB/T 35030-2018 烟花发射高度、发射偏斜角、辐射半径测定方法
GB/T 35030-2018.Determination metheds for launching height, launching deflection angle and radiation...