The demand is affected by price and income, classified as price elasticity of demand, income elasticity of demand and cross elasticity of demand.

需求受价格和收入变动的影响，可以分为需求价格弹性、需求收入弹性、需求交叉弹性。

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Complementary goods have a negative cross elasticity of demand.

互补商品的需求的交叉弹性为负数。

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In the second section, the relationship between the cost, the cross elasticity of product's demand and these two competitive strategies is examined.

其次，研究了产品成本和产品交叉弹性与这两种竞争战略的关系。

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Using a different econometric method gets a cross-elasticity of about .20%, or a 2% increase in gas for every 10% decrease in price.

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