共 7 条
[1]
ARMSTRONG E, 1940, METAL TREATMENT, V6, P153
[3]
EHRHARDT RA, 1947, MONTHLY REV AM ELECT, V34, P421
[4]
Hewitson E. H., 1927, U.S. Patent, Patent No. 1627900
[5]
KELLER F, 1949, 36TH P ANN CONV AM E
[6]
KORPIUM J, 1939, Patent No. 2142564
[7]
MEYER WR, 1946, MONTHLY REV AM ELECT, V33, P269