There will be no hard-and-fast rules, but likely criteria include whether curtailment would destroy capital stock and how critical a firm's output is to a supply chain.

不会有硬性规定，但可能的标准包括削减是否会破坏资本存量以及公司产出对供应链的重要性。

The concept of user cost enables us, moreover, to give a clearer definition than that usually adopted of the short-period supply price of a unit of a firm's saleable output.

此外， 用户成本的概念使我们能够给出比通常采用的单位可销售产出的短期供应价格更清晰的定义。