Figure 5.11 illustrates the same point for the case in which external economies affecting marginal cost curves are sufficiently important to yield a negatively sloping supply curve to the industry.
影响边际成本曲线的外部经济，对于得出一条负斜率的行业供给曲线是非常重要的——图5.11即以这种情况说明上面相同的观点。
Figure 5.7 (a) implies a positively sloped supply curve for the industry, since the price associated with the increased demand (OE) is higher than the price associated with the initial demand (OE ').
图5.7 (a)意味着行业的供给曲线为正斜率，因为与需求增加相应的价格(OE)要高于初始需求的价格(OE)。
Figure 5.7 (a) implies a positively sloped supply curve for the industry, since the price associated with the increased demand (OE) is higher than the price associated with the initial demand (OE ').
图5.7 (a)意味着行业的供给曲线为正斜率，因为与需求增加相应的价格(OE)要高于初始需求的价格(OE)。
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