quartz capillary

例句：

1. 1. The quartz capillary is used to separate different substances based on their molecular size.
   石英毛细管用于根据分子大小分离不同的物质。
2. 2.In the study of crystal growth, quartz capillaries are often used to monitor the process.
   在晶体生长研究中，石英毛细管经常被用来监测过程。
3. 3. The quartz capillary was carefully inserted into the sample and allowed to run for several minutes before being removed.
   石英毛细管被小心地插入样品中，并允许运行几分钟后才能取出。