homopolar field magnet

例句：

1. 1. The homopolar field magnet isused to attract and hold objects together.
   同极磁场磁铁用于吸引和保持物体在一起。
2. 2.The homopolar field magnet is a powerfultool for scientists to study the behavior ofmatter.
   同极磁场磁铁是科学家研究物质行为的有力工具。
3. 3. The homopolar field magnetis also used in medical imaging to createdetailed images of the human body.
   同极磁场磁铁还在医学成像中用于创建人体详细图像。