quartz ladder

例句：

1. 1.The quartz ladder is a popular tool for measuring heights.
   石英梯子是测量高度的热门工具。
2. 2. The quartz ladder was used to climb the mountain.
   石英梯子被用来爬山。
3. 3. The quartz ladder has become a symbol of progress in science and technology.
   石英梯子已成为科学和技术进步的象征。