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现代血流测量方法吴运平陈立波童家明(266021),,,,:(1):(),,(Fick)(2):,,(3):,,,,,,,,,,,,,,,(C.Doppler)1842;,f,uv,c,ff:f=c+vc-uf,u;,v;,11:v,,(f,C),,,:f=c-vcoscf,:f=cc+vcosff=f-f=2vcosc+vcoscvcos,f=2vcoscf,fc,fv,f,,,60,70,!19!166(96),2:,,2(),,,;,(),,∀#,3,3,pOv,fpf:fp=c-v!ropcfcSrps,ps,sfsfp:fs=c+v!rpscfp,f=fs-f=v!(rps-rop),,,v,fv2050,,,,,,,,,,4B0,,,B0,4,(),B0,5,,,h!E,,5:!20!声乐的颤音与调幅波钟育乔杨蕾(570102),,(Vibrato)∀#,,,∀#,,?∃∃∃,,,;∃∃∃,,,;∃∃∃!,∀#,(∀%∀∀∀),,(),1S1=Acos[(k-k)x-(∀-∀)t]S2=Acos[(k+k)x-(∀+∀)t]K=2#/;∀∀1S=S1+S2,:A2=2A2[2cos2(kx-∀t)]A=2Acos(kx-∀t)h!0=E=gu0B0!0=gu0B0h∀0=∃!B0,∃=2#gu0/h,∀0B0,,1T1H,42.5MHz,,,,,,,MvQ,,6,Mv(6),,S=Q/V!21!166(96)