需求的交叉弹性（cross elasticity of demand）是在其他条件不变的情况下，一种产品的需求对其替代品或互补品价格变动的反应程度的衡量。
互补商品的需求的交叉弹性为负数。
Complementary goods have a negative cross elasticity of demand.
这家公司首先观察价格对交叉需求弹性的影响。交叉需求弹性是指某产品的销售因它种产品价格发生变化而产生的反应。
The firm first looks at price as it affects demand cross elasticity, that is, the responsiveness of the sales of one product to a change in the price of another product.
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。
The demand is affected by price and income, classified as price elasticity of demand, income elasticity of demand and cross elasticity of demand.
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