supporting roll

例句：

1. 1.The ancient library has a collection of historical documents that are housed in this supporting roll.
   这个支撑卷轴收藏着古代图书馆的一批历史文献。
2. 2. During the construction, the workers used the supporting roll to support the heavy beams.
   在施工过程中，工人们使用这个支撑卷轴来支撑沉重的梁。
3. 3. The supporting roll is essential for maintaining the stability of the structure during construction.
   支撑卷轴对于保持结构在施工期间的稳定性至关重要。