(来学网)金瓷冠的金属基底冠有瓷覆盖部位的厚度一般为
  • A.
    (来学网)0.5mm
  • B.
    (来学网)0.6mm
  • C.
    (来学网)0.7mm
  • D.
    (来学网)0.8mm
  • E.
    (来学网)1mm