effective gradient

例句：

1. 1. The effectivegradient of the temperature change is a criticalfactor in determining the optimal operating conditions.
   温度变化的有效梯度是确定最优操作条件的关键因素。
2. 2. In this study, we investigated theeffective gradient of the drug distribution in thebrain.
   在这项研究中，我们研究了药物在大脑中的有效梯度分布。
3. 3. The effectivegradient of the material was measured using ahigh-resolution scanning electron microscope.
   使用高分辨率扫描电子显微镜测量了材料的有效梯度。