zero net growth isoline

例句：

1. 1.The zero net growth isoline is a critical factor in determining the optimal allocation of resources.
   零净增长等值线是确定最优资源配置的关键因素。
2. 2.The zero net growth isoline is used to identify areas where economic growth has plateaued or slowed down.
   零净增长等值线用于识别经济增长已达到平台或放缓的区域。
3. 3. The zero net growth isoline is often used as a baseline for comparing different economic models and policies.
   零净增长等值线常被用作比较不同经济模型和政策的基础。