tube micrometer

例句：

1. 1. The engineer used a tube to connect the two pipes.
   工程师使用一根管子将两根管子连接起来。
2. 2. The scientist discovered a new type of tube that could be used for medical purposes.
   科学家发现了一种可用于医疗目的的新型管子。
3. 3. The tube was used to transport gases and liquids through the pipeline system.
   这种管子被用来通过管道系统输送气体和液体。