backing pass 中文意思是什麼

backing pass 解釋
背焊道
  • backing : n 1 後退，倒退，逆行。2 支持物；支援；（一群）支持人。3 襯墊物；（書的）背襯，襯里，照相底板。4 ...
  • pass : vi （passed passed past ）1 經過，通過；穿過；越過；超過；掠過；前進。2 （時間）流逝，推移；轉化...
  1. Backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis, wire feeding behavior, weld arc length, welding current analysis, procedure and joint test. the achievement has general guide meaning to producing and testing all - position welder

    從單焊道全位置區段、送絲行為、焊接弧長（電壓） 、電流行為分析、工藝試驗和接頭檢驗等幾方面介紹管道全位置打底焊工藝特點，其研究成果對全位置焊接機的製造和調試具有普遍指導意義。
  2. Abstract : backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis, wire feeding behavior, weld arc length, welding current analysis, procedure and joint test. the achievement has general guide meaning to producing and testing all - position welder

    文摘:從單焊道全位置區段、送絲行為、焊接弧長（電壓） 、電流行為分析、工藝試驗和接頭檢驗等幾方面介紹管道全位置打底焊工藝特點，其研究成果對全位置焊接機的製造和調試具有普遍指導意義。
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