The fund uses the "marginal external cost" rule to allocate funds.
这个基金组织用“边际外部成本”规则去分配基金。
Social marginal cost — the cost of producing an additional unit of the resource that is borne by society at large. Generally includes private marginal costs plus external marginal costs.
社会边际成本——每增加一单位的资源使得社会收益增大的生产成本。总体包括个人边际成本加外部边际成本。
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。
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