Complementary goods have a negative cross elasticity of demand . 互补商品的需求的交叉弹性为负数。
2.
The text calculated the price elasticity of demand of nr ( natural rubber ) and the cross elasticity of demand of nh and sr by establishing the model of nr ' s demand function 摘要通过建立天然橡胶需求函数模型,估算了天然橡胶的需求弹性系数和天然橡胶与合成橡胶的替代弹性系数。