What is price elasticity of demand?
何谓需求的价格弹性？
Where the price elasticity of demand is less than 1.
需求价格弹性绝对值小于1的情况。
Define the price elasticity of demand and the income elasticity of demand.
定义需求的价格弹性和需求的收入弹性。
Define the price elasticity of demand and the income elasticity of demand.
定义需求的价格弹性和需求的收入弹性。
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