【正】 Y2002-63302-5 0302695超声换能器用智能1-3复合材料=Smart 1-3 compos- ites for ultrasonic transducer applications(会,英]/Chan,H.L.W.//2001 IEEE Hong Kong Electron DevicesMeeting.—5~6(E) Y2002-63302-64 0302696用于线键合换能器的压电环特性=Characterization ofpiezoelectric ring used for wire bonding transducer appli-cation[会,英]/Cheng,K.C.& Chan,H.L.W.//2001 IEEE Hong Kong Electron Devices Meeting.—64~67(E)