under-load tap changer的用法和樣例：
例句
- A method of switching mutual repulsive thyristors in the process of on-load tap changer is proposed.
提出了一種有載調壓過程中互斥晶閘管組的通斷控制方法。 - Two practical methods are introduced to renovate the power transformer with no-load tap changer into that with on-load one.
介紹了改造電網大型無載調壓變壓器為有載調壓變壓器的兩種常用方式。
