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阿君呀

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[求助] 求助!!聚甲基丙烯酰亚胺PMI外文标准:DIN WL 5.1460;DIN LN 29898;MIL PRF 46194

求助各位以下四篇PMI外文标准:
德国标准:
DIN WL 5.1460 Aerospace; Rigid Cellular Materials; Polymethacrylimide (pmi), Without Flame Retardant Additives

DIN WL 5.1461   Aerospace; Rigid Cellular Materials; Polymethacrylimide (pmi), Of High Dimensional Stability At Elevated Temperatures, Without Flame Retardant Additives

DIN LN 29898  aerospace series - rigid cellular materials, polyvinyl chloride and polymethacrylimide sheet - dimensions, masses

美国标准:
  MIL PRF 46194    Foam, Rigid, Structural, Closed Cell Polymethacrylimide (Pmi)
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