back - up roll

• 支撑辊

back - up roll的用法和样例：

例句

1. The application results show that the distribution of roll contact pressure was meliorated, and the life of the backup roll was improved.
   结果表明，优化后的辊型曲线改善了辊间压力的分布情况，降低了轧制末期工作辊边部对支撑辊的磨损，提高了支撑辊轧制质量。