hermetically-sealed type transformer

例句：

1. 1. The hermetically-sealed type transformer is an essential component in power distribution systems.
   密封型变压器是电力分配系统中的一个关键组件。
2. 2.The hermetically-sealed type transformer has a high efficiency and long service life.
   密封型变压器具有高效率和长寿命。
3. 3. The hermetically-sealed type transformer is widely used in industrial applications due to its reliability and durability.
   由于其可靠性和耐用性，密封型变压器在工业应用中被广泛使用。