pure stretch levelling

例句：

1. 1. The pure stretchlevel of the material is crucial for itsperformance.
   材料中的纯拉伸水平对其性能至关重要。
2. 2.The engineer used a special tool to achievethe desired pure stretch level.
   工程师使用特殊的工具达到了所需的纯拉伸水平。
3. 3. The pure stretchlevel was carefully monitored during the manufacturing process.
   在制造过程中，纯拉伸水平得到了仔细的监控。