deficiency of investment

• 投资效益

deficiency of investment的用法和样例：

例句

1. But the real challenge will be sustaining economic activity and productive investment.
   但是真正的挑战将是如何保持经济活力和投资效益。
2. Compared with the input-output analysis, the input-occupy-output analysis is more suitable to evaluate the effectiveness of the fixed investment.
   相比较一般的投入产出分析，投入占用产出分析更加适合用于研究固定资产的投资效益。