(来学网)PACS的英文全称是
  • A.
    (来学网)Physicsand Astronomy Classification Scheme
  • B.
    (来学网)Physics Astronomyand Communication System
  • C.
    (来学网)Picture Archivingand Classification Scheme
  • D.
    (来学网)Picture Archivingand Communication System
  • E.
    (来学网)Political Action Committee System
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