This paper introduced an automatic air mixing equipment for gas protection welding at work site, which can control the accurate proportion of airs.

 
  • 介紹了一種用于焊接現場(chǎng)的氣體保護焊的自動(dòng)混氣設備,該設備能精確控制氣體混合比例。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan