共 7 条
[1]
COLLINS JH, 1970, ULTRASONICS OCT, P218
[2]
COQUIN GA, 1966, J ACOUST SOC AM, P921
[3]
HICKERNELL FS, 1970, IEEE ULTRASONICS S S
[5]
SANDBANK CP, Patent No. 1092224
[6]
SMITH WR, 1969, IEEE T MICROWAVE THE, VMT17, P856
[7]
STERN E, 1969, ULTRASONICS, P227