共 7 条
[1]
*CHAS SCI CO, 1998, US MAN V1 2 AWG1200
[2]
KROUPA VF, 1998, DIRECT DIGITAL FREQU
[3]
Lu Tie-Liang, 2000, Chinese Journal of Semiconductors, V21, P1075
[6]
NICHOLAS HT, 1978, P 41 ANN FREQ CONT S, P495
[7]
Weaver L., 1990, U.S. Patent, Patent No. [4,905,177, 4905177]