共 10 条
[2]
MORRISH AH, 1980, FERRITES, P613
[3]
SCHNITKER W, 1981, IEEE T MAG, V16, P14
[4]
TAGAWA K, 1985, IEEE T MAG, V21, P1942
[6]
1984, Patent No. 4469507
[7]
2072639
[8]
1890, Patent No. 422351
[9]
1880, Patent No. 230024
[10]
2068923