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提高7000系铸态铝合金组织和性能的等通道转角挤压加工方法

Date:2019-10-22  Hits:

  • Type of Patent:发明
  • State of Patent:已授权
  • Authorization number:200910232936.6
  • Service Invention or Not:no
  • Application Date:2009-10-19
  • Authorization Date:2012-03-28
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