torque grading curve

例句：

1. 1. The torque grading curve is used to determine the optimal rotation speed for a given load and material.
   扭矩分级曲线用于确定给定负载和材料的最佳旋转速度。
2. 2. The torque grading curve was developed to help engineers select the appropriate bearing size based on their specific application needs.
   扭矩分级曲线的开发旨在帮助工程师根据其特定应用需求选择适当的轴承尺寸。
3. 3. The torque grading curve can be used to predict the performance of a machine under different operating conditions.
   扭矩分级曲线可用于预测机器在不同操作条件下的性能。