shell type transformer

例句：

1. 1. Thenew transformer is designed to improve theefficiency of the power grid.
   新型变压器旨在提高电网的效率。
2. 2. The shell-type transformeris widely used in industrial applications.
   壳型变压器在工业应用中广泛使用。
3. 3. The shell-type transformer has a compact designthat makes it easy to install and maintain.
   壳型变压器设计紧凑，易于安装和维护。