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（ermrofIndlcahonofa。nngl。tllllllellt）计量仪器的示值与被测量（约定）其值之差。例如：电流表的示值I。为4（），若电流实际值I；为4lA，则电流表的示值误差面一I。－It二一IAO计量器具的示值误差
(ErmrofIndlcahonofa.nngl.tllllllellt) The difference between the indication of the measuring instrument and the measured (agreed) value. For example: Ammeter I. For 4 (), if the current actual value I; 4lA, the ammeter shows the error of a surface I. -It two IAO measuring instruments show the error