The fractograph chemical composition and microstructure of the failed extinguisher nozzle were analyzed by SEM and energy spectrum.

 
  • 通過(guò)掃描電鏡、能譜儀等手段對失效的運五壇機滅火瓶管嘴斷裂進(jìn)行斷口形貌、化學(xué)成分和金相組織分析。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan