超声基础知识447.doc

160 0 447 0 1()ABCD2()ABCDEABC3()ABCDE4()ABCDE5()A2BCDC=TEC=f6()ABCD7()A1020MHzB5.010MHzC68MHzD3.05.5MHzE1.02.5MHz8()AV=fBC2()D2()29()ABCDE10()ABCDE11()AABBCDDM12()ABCDE13CDE()ABCD(Scale)E14()ABCDE15()ABCD16()A120HzB520HzC5Hz5kHzD16Hz20kHzE20kHz17()ABCDE18()ABCDE19()ABCD20()ABCD2120kHz()ABCD22()ABCD23()ABCDE24()ABCDEX25()ABCD26()ABCD27()ABC(TGC)DE28()ABCD29()ABCD30()AMBCDE31()ABCDE32()ABCD33()ABCDE34(m/s)()A1570m/sB1570m/sC1560m/sD1.522m/sE1570m/s35B()ABCDE36()ABCD37()ABCD38()AB(1/1000)CD1/2E39()ABCD40()ABCD41()ABCD42()ABCD43()ABCDE44()ABCD45()ABCDE46()ABCDE47()ABCD48()ABCDE49()ABCDE50()ABCDE220/120Hg512MHz()A1/2mmB1/2cmC3/4mmD2mmE2cm52()ABCDE53()ABCD90E9054()ABCDE55()ABCDE56()ABCD57()ABCD58()ABCD59()A3.03.5MHzB2.02.5MHzC4.04.5MHzD5.05.5MHzE6.06.5MHz60()ABCD61()ABCDE62()ABC63()A4B2CD1/2E1/464()ABCDE65()ABC3mmDE66f0fd()ABCDE67()ABCD68()ABCD69()ABCD70()ABCDE71()ABCDE72M()ABCDE73()AABBCMDE74()ABCDE75()ADussik(1942)BWild(1950)CDonald(1958)DOksala(1958)ELeksell(1956)76()ABCDE77()ABCBD78()A2.02.5MHzB2.53.0MHzC3.03.5MHzD3.55.0MHzE7.510.0MHz79()ABCD80()ABCD81()ABCD82()ABCDE83()ABCDE84()ABCDE85()ABCD86()ABCDE87()ABCDE8816Hz()ABCDXE89()ABCDE90()ABCD91()A12.5MHzB2.510MHzC1012MHzD1214MHzE1416MHz923D()A3DBC3DD93()ABCD94()ABCD95()ABCDE96()ABCD97()A0.11.5mmB1.52mmC25mmD5.515mm98()ABCDE992()A2BC4D100()ABCD101()ABCDE102()ABCD103CDFI()ABCDE104()ABCDE105()ABCD106()ABCD107()A1Hz20HzB5Hz20HzC5Hz5KHzD20Hz20KHzE1Hz15Hz108()ABCD109()ABCD110()ABCD111()ABBCD112()ABCD113()ABCD114()ABCDE115()ABCDE335116()ABCDE11712()ABCDE118()AB0CDE119()ABCDE120()ABCDE121()ABCDE122()ABCDE123()ABCDE124()AMBCDE125()ABCD126()AMBCDE127()ABCDE128()ABCDE1295MHz1500()A0.3mmB0.3cmC0.6mmD0.6cm130()ABCDE131()ABCDE13233.5MHz()A1mmB1.5