pure torsion

例句：

1. 1. The car was in perfect pure torsion when it hit the curb.
   汽车在撞到路边时处于完美的纯粹扭转状态。
2. 2. The rope had a strong pure torsion that made it difficult to break.
   这根绳子有很强的纯粹扭转，使得很难扯断。
3. 3. The scientist used pure torsion to test the strength of the material.
   科学家使用纯粹的扭转来测试材料的强度。