price-cost margin是什么

price-cost margin是什么
price-cost margin这在微观经济学里到底是什么啊,有人说是MP边际收益,但是和英语是价格成本啊,到底是边际成本还是什么

Term price-cost margin Definition:
The difference between price (p) and marginal cost (mc) as a fraction of price,that is [p-mc]/p.The price-cost margin is usually taken as an
indicator of market power because the larger the margin,the larger the
difference between price and marginal cost,that is,the larger the
distance between the price and the competitive price.The price-cost
margin depends on the elasticity of demand.The price-cost margin is
also called the Lerner index of market power.