超聲波的縱波發射聲場
1.圓盤波(bo)(bo)(bo)源(yuan)(yuan)(yuan)(yuan)(yuan)縱波(bo)(bo)(bo)聲(sheng)場(chang) 在(zai)不考慮(lv)介質中(zhong)衰減的(de)(de)情況(kuang)下(xia)，圓盤波(bo)(bo)(bo)源(yuan)(yuan)(yuan)(yuan)(yuan)在(zai)理(li)想(xiang)液體介質中(zhong)振動輻射聲(sheng)波(bo)(bo)(bo)，其(qi)中(zhong)某(mou)一(yi)點(dian)波(bo)(bo)(bo)源(yuan)(yuan)(yuan)(yuan)(yuan)d,在(zai)波(bo)(bo)(bo)源(yuan)(yuan)(yuan)(yuan)(yuan)軸(zhou)線上(shang)(shang)Q點(dian)所引起(qi)的(de)(de)聲(sheng)壓(ya)為(wei)（圖2.13)基于波(bo)(bo)(bo)的(de)(de)疊(die)加原(yuan)理(li)，整個圓盤波(bo)(bo)(bo)源(yuan)(yuan)(yuan)(yuan)(yuan)上(shang)(shang)各(ge)點(dian)在(zai)Q點(dian)引起(qi)的(de)(de)聲(sheng)壓(ya)疊(die)加，就是(shi)Q點(dian)處的(de)(de)聲(sheng)壓(ya)，由此可得到軸(zhou)線上(shang)(shang)任一(yi)點(dian)的(de)(de)聲(sheng)壓(ya)幅值為(wei)波(bo)(bo)(bo)源(yuan)(yuan)(yuan)(yuan)(yuan)軸(zhou)線...
