nD(cm)L(cm)50T(s)12.19863.8780.6622.19663.6280.7232.19663.4780.9342.19663.6380.7252.19863.4280.74平均值2.19763.6080.75标准差0.00110.17570.102860.0004898980.078570.046仪器最大允差0.0020.050.01估计最大允差000.20.0020.050.20024984390.00128266807820.09110722720957860.08488527050.001785539056660.2190595436472420.14425272950.002532140280450.3618060804654580.2218786054A类不确定度B类不确定度合成不确定度P=0.68合成不确定度P=0.95合成不确定度P=0.999.869.809.739.809.779.790.047210.02111g(m/s2)
