本文指出IEC文件中“磁平”的定义欠妥。作者提出了一组较严密的相关词条,并以实例说明各词条间的相互关系。一、引言在音频领域内,“平”(levcl)常用来描述相对物理量,以dB为单位。例如,IEC出版物268-2《声系统设备,第二部分:一般术语的定义》中的3.2条,对电压平(voltagelevel)的定义是:被测电压与参考电压比值的对数乘以20,表示为 This paper points out that the definition of “magnetic flat” in IEC document is not proper. The author put forward a group of more closely related terms, and an example of the relationship between the terms. I. INTRODUCTION In the field of audio, “flat” (levcl) is often used to describe relative physical quantities in dB. For example, Section 3.2 of IEC Publication 268-2, “Acoustic System Equipment, Part 2: Definitions of General Terms,” ​​defines a voltage level as the logarithm of the measured voltage to the reference voltage multiplied by 20 ,Expressed as