buck and boost transformer

例句：

1. 1. The new buck and boost transformer significantly improved the efficiency of our power system.
   新的提升变压器显著提高了我们电力系统的效率。
2. 2. The boost transformer was designed to increase the voltage level for better transmission.
   提升变压器被设计用来提高电压水平以便于更好的传输。
3. 3.The buck and boost transformer was used in the construction of the new substation.
   提升变压器在新建变电站的建设中被使用。