论文部分内容阅读
只有指出实测数值的不确定度或误差时,确定实测物理量的值才是有意义的。在低气压的测量中,由于使用者既不知道误差,又没有可能使用校准过的真空规。这样表述实际上总有一定的局限性。在低气压和极低气压,即在1000～10~(-9)毫巴的测量范围内,为了获得相对于测量压强的标准规的压强值的总不确定度 E_(tot)=∑E_i,必须定量地知道 E_1、E_3、E_3、E_4、E_5。我们将看到,无论试用哪种类型的规,都难以得到这些“E”值。这一点将通过研究关于电答式
It is only meaningful to determine the value of the measured physical quantity only by pointing out the uncertainty or error of the measured value. In low pressure measurements, it is not possible to use a calibrated vacuum gauge because the user does not know the error. In fact, there are always some limitations. In order to obtain the total uncertainty of the pressure values relative to the gauge of the measured pressure at low and very low pressures, ie in the measuring range of 1000 to 10 -9 mbar, E tot = ΣE_i, E_1, E_3, E_3, E_4, E_5 must be known quantitatively. We will see that it is hard to get these “E” values regardless of the type of rule you are trying out. This will be done by studying the answer type