low pressure mercury lamp

例句：

1. 1.This type of lamp is commonly used in low-pressure environments.
   这种灯在低压环境下常用。
2. 2.The low-pressure mercury lamp was the first to be invented.
   低压汞灯是第一种被发明的。
3. 3.The low-pressure mercury lamp has a longer lifespan than traditional bulbs.
   低压汞灯的使用寿命比传统灯泡更长。