(来学网)5MHz探头的理论轴向分辨力是
  • A.
    (来学网)0.3mm
  • B.
    (来学网)0.15mm
  • C.
    (来学网)0.25mm
  • D.
    (来学网)0.5mm
  • E.
    (来学网)2.5mm