top-bow separator

例句：

1. 1.The top-bow separator is used to separate the two halves of a paper roll.
   顶线分离器用于将纸卷的两部分分开。
2. 2. In packaging, the top-bow separator ensures that the product is properly sealed and protected.
   在包装中，顶线分离器确保产品得到适当的密封和保护。
3. 3. The top-bow separator is an essential tool for printing press operators to maintain the quality of printed materials.
   顶线分离器是印刷机操作员维护打印材料质量的重要工具。