共 6 条
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- [2] EVANS PE, 1956, 1954 S POWD MET, P131
- [3] Naeser G., 1950, STAHL EISEN, V70, P995
- [4] WILLIAMS NJ, 1968, INT J POWDER METALL, V4, P47
- [5] WORN DK, 1959, POWDER METALL, P45
- [6] WORN DK, 1958, POWDER METALL, P85