数字万用表，一种多用途电子测量仪器，一般包含安培计、电压表、欧姆计等功能，有时也称为万用计、多用计、多用电表，或三用电表-Digital multimeter, a multi-purpose electronic measuring instrument, voltage meter, ammeter, generally contain ohmmeter function, sometimes referred to as the multimeter, multipurpose meter, multimeter, or three meter