声速测量实验数据1.共振法位置Xi（mm）测量次数i测量次数i位置Xi（mm）Li=Xi+8-Xi(mm)1182.59219.436.92187.010224.037.03191.811228.736.94196.012233.037.05200.513237.837.36205.014242.137.17210.115247.036.98215.016251.836.8λi=Li/49.2259.259.2259.259.3259.2759.2259.2υi=fλ342.44343.37342.44343.37346.15344.30342.44341.512.相位比较法位置Xi（mm）测量次数i测量次数i位置Xi（mm）Li=Xi+8-Xi(mm)1179.2921535.82184.010220.136.131.011225.036.04194.012229.835.85197.613233.636.06202.014238.036.07206.715242.736.08210.216246.236.0λi=Li/49.09.09.09.09.09.09.09.0υi=fλ332.6335.4334.5332.6334.5334.5334.5334.5L(平均值)=36.99U(L)=0.16λ(平均值)=9.25U(λ)=0.039υ(平均值)=343.25U(υ)=1.44υ实=343.25±1.44(m/s)υ理=340.56(m/s)L(平均值)=36.0U(L)=0.11λ(平均值)=9.0U(λ)=0.03υ(平均值)=334.15U(υ)=0.99υ实=334.15±0.99(m/s)υ理=340.56(m/s)
