耳节电器是一个很小的电线，介于你的音乐播放器和音乐之间。
The Ear Saver is a small wire that sits between your player and your headphones.
针对城市照明系统，设计了一种基于交流斩波技术的新型城市照明节电器。
A new city lighting energy saver based on AC chopper technology for city lighting system was designed.
交流接触器可控硅节电器属于电力电子技术领域内一种可控硅的应用范围。
The utility model relates to a controlled silicon power economizer for an AC contactor, belonging to the field of power electronic technology.
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