共 7 条
[2]
KHURANA A, 1988, PHYSICS TODAY MAY, P17
[4]
Kremkau F, 1990, DOPPLER ULTRASOUND P
[5]
Oates C P, 1989, Ultrasound Med Biol, V15, P75, DOI 10.1016/0301-5629(89)90136-1
[7]
Wells P N, 1989, Ultrasound Med Biol, V15, P73, DOI 10.1016/0301-5629(89)90135-X