cylinder boundary

例句：

1. 1. Thecylinder boundary is the line that separatestwo parallel cylinders.
   圆柱边界是分隔两个平行圆柱的线。
2. 2. Thecylinder boundary is critical formaintaining the stability of the structure.
   圆柱边界对于保持结构的稳定性至关重要。
3. 3.The cylinder boundary is a crucial factor indetermining the size and shape of the object.
   圆柱边界是确定物体大小和形状的关键因素。