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guan yu guang yan liang he qiang du liang
Author(s): 
Pages: 91-92
Year: Issue:  3
Journal: Acta Scientiarum Naturalium Universitatis Neimongol

Keyword:  广延量强度量齐次函数均匀系总质量热力学量内能内在性总体积非理想气体;
Abstract: <正> 在热力学中通常把描写均匀系的变量分为两类,一类是与总质量成比例的,名为广延量,另一类是代表物质的内在性质与总质量无关的,名为强度量。对于广延量和强度量可以用一个齐次函数来表示,一个广延量应是广延量的一次齐次函数,而强度量则是广延量的另次齐次函数,对于多元均匀系,其体积V=V(T,p,N1,....,Nk) (1)若各组元的克分子数同时增加λ倍,而总体积亦增加λ倍,即V’=V(T,p,λN1,...,λNk)=λV(T,p,N1,...,Nk) (2)则称体积为广延量。对于内能、焓、熵等热力学量,若有类似(2)的性质,则称它们为广延量。
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