low voltage focusing

例句：

1. 1. The device is designed to focuslight in a specific area.
   该设备旨在将光线聚焦在特定区域。
2. 2. In the experiment, the low-voltage focusingtechnique was used to observe the effects ofthe chemicals.
   实验中使用了低电压聚焦技术来观察化学物质的效果。
3. 3. The scientistfocused on the importance ofmaintaining good health for optimal performance.
   科学家专注于保持良好健康以实现最佳表现的重要性。