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1·We prove that the long run cost function is a power function of output, and point out the special relationship between long run marginal cost function and long run average cost function.

文章研究一般性齐次生产函数条件下长期成本函数的确定方法，证明了长期成本函数是关于产量的幂函数，并指出了长期边际成本函数和长期平均成本函数之间的特殊关系。

2·How is the long-run average cost curve (LRAC) derived?

长期平均成本曲线是怎么样得到的？

3·How and why does a firm's average-total-cost curve differ in the short run and in the long run?

为何一个企业的短期平均总成本和长期平均总成本不一致？

4·It is proved that an optimal stationary policy exists under the criterion of long-run average cost.

在平均费用准则下，证明了最优平稳策略的存在性。

5·As example and cost comparisons show, long-run average cost for vendors under a time-based consolidated delivery policy is lower than an immediate delivery policy in common situation;

零售商需求速率和供应商配送成本对于供应商即时配送策略下的长期期望平均成本的影响要比对于整合配送策略下的成本影响大得多。

6·Does a firm's price equal the minimum of average total cost in the short run, in the long run, or both? Explain.

企业产品的价格在短期等于最低平均总成本还是长期等于最低平均总成本，还是两者都等于？