《计量技术》1989年第2期“平均比热容的曲率校正”一文中对比热容的定义式是错的。在物理量的名称中,“比……”的含义是……物理量除以其质量。例如:比体积v定义为v=V/m即体积除以质量;比活度a定义为放射性活度A除以质量,即a=A/m等。有一大批这样的量,而且,在其英文的名称中均对应为“specific……”。在它们的SI单位中,均有kg~(-1)这一组成部分。过去计量技术中常用的比重,定义为与同体积水的质量之比,与上述规律不符,现已废除(还有其它更重要的原因,本文不去涉及)。因此,比热容c的定义只能是热容C除以质量m,即c=C/m。其SI单位为J/ “Measurement Technology” 1989 the second period “average specific heat capacity of the curvature correction,” the definition of contrast heat capacity is wrong. In the name of a physical quantity, the meaning of “more than ...” is ... the physical quantity divided by its mass. For example: the specific volume v is defined as v = V / m, ie the volume divided by the mass; the specific activity a is defined as the radioactivity A divided by the mass, ie a = A / m and so on. There is a large number of such quantities, and in their English names are corresponding “specific ......”. In their SI units, there are kg ~ (-1) of this component. In the past, the proportion commonly used in metrology technology, defined as the mass ratio to the same volume of water, was inconsistent with the above law and has now been abolished (there are other more important reasons not covered in this article). Therefore, the definition of specific heat capacity c can only be the heat capacity C divided by the mass m, that is c = C / m. The SI unit is J /