resistance gradient

例句：

1. 1.The resistance gradient of the soil is an important factor in determining the growth rate of plants.
   土壤的抗力梯度是决定植物生长速率的重要因素。
2. 2. The engineers used a computer program to calculate the resistance gradient of the pipeline.
   工程师们使用计算机程序来计算管道的抗力梯度。
3. 3. The resistance gradient can be used to predict the performance of the material under different conditions.
   抗力梯度可以用来预测材料在不同条件下的性能。