ratio adjuster

例句：

1. 1. The ratio adjuster on the scale helps to ensure that the measurements are accurate.
   秤上的比率调节器有助于确保测量准确。
2. 2. The engineer used a ratio adjuster to fine-tune the machine's settings.
   工程师使用比率调节器来微调机器的设置。
3. 3. The ratio adjuster was designed to help balance the weight of different materials being tested.
   比率调节器被设计用来帮助平衡正在测试的不同材料的重。