multiple-bar bell jar

例句：

1. 1.The scientist used a multiple-bar bell jar to collect samples.
   科学家使用一个多重条形瓶来收集样本。
2. 2. The chemical engineer designed a multiple-bar bell jar for the experiment.
   化学工程师为实验设计了一个多重条形瓶。
3. 3. The chemist carefully measured out the chemicals in a multiple-bar bell jar.
   化学家小心翼翼地在多重条形瓶中测量出化学品。