铜在频率f=50Hz时,透入深度D.=9.4mm,当频率f=5×106Hz时,透入深度为
铜在频率f=50Hz时,透入深度D.=9.4mm,当频率f=5×106Hz时,透入深度为
A.0.094mm
B.0.66μm
C.0.0297μm
D.0.0297mm
正确答案:0.0297mm
铜在频率f=50Hz时,透入深度D.=9.4mm,当频率f=5×106Hz时,透入深度为
A.0.094mm
B.0.66μm
C.0.0297μm
D.0.0297mm
正确答案:0.0297mm
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