验磁器

例句：

1. 1. The magnetometer is used to measure the strength of magnetic fields.
   磁力计用于测量磁场的强度。
2. 2. The magnetometer was used to detect the presence of a nearby piece of metal.
   磁力计被用来探测附近金属的存在。
3. 3. The magnetometer was used to study the behavior of magnetic materials under different conditions.
   磁力计被用来研究不同条件下磁性材料的行为。