Dust core with {TAIL ~ specific relationship} between particle diameter and {HEAD ~ coating thickness}, and method for producing same 
Dust core with { TAIL ~ specific relationship } between particle diameter and { HEAD ~ coating thickness } , and method for producing same
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH