contribution margin per composite unit

例句：

1. 1. The company's contribution margin is a key metric for measuring its profitability.
   公司的边际贡献是衡量其盈利能力的关键指标。
2. 2.The contribution margin per unit is calculated by dividing the total contribution margin by the number of units sold.
   每单位的贡献边际是通过将总贡献边际除以售出的单位数来计算的。
3. 3. To improve profitability, the company needs to increase its contribution margin per unit.
   为了提高盈利能力，公司需要增加每单位的贡献边际。