共 16 条
[12]
OBRIEN WD, 1978, ULTRASOUND ITS APPLI, P374
[13]
OSTREICHER HL, 1951, J ACOUST SOC AM, V23, P707
[15]
Schoch A., 1950, SCHALLREFLEXION SCHA
[16]
TAUTZ H, 1971, WARMELEITUNG TEMPERA, P191