Over-loading of strong flash pyrotechnic composite was studied by using drop hammer simulation device.

 
  • 采用大落錘沖擊裝置模擬研究了強閃光煙火藥的過(guò)載能力。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan