(来学网)电镜样品包埋常用的环氧树脂要求的聚合环境是
  • A.
    (来学网)60℃,24H
  • B.
    (来学网)60℃,48H
  • C.
    (来学网)22℃,24H
  • D.
    (来学网)4℃,24H
  • E.
    (来学网)室温,8H