per-unit calculation

例句：

1. 1. The company's profitability is closely tied to its ability to perform per-unit calculations.
   该公司的盈利能力与其进行每单位计算的能力密切相关。
2. 2. The engineer used the per-unit calculation to optimize the design.
   工程师利用每单位计算优化了设计。
3. 3. The company's financial performance was heavily influenced by its per-unit calculations.
   公司的财务状况受到其每单位计算的影响很大。