onoff system的用法和樣例：
例句
- Placing the switch system in a low humidity room will minimize this effect.
將開(kāi)關(guān)系統置于低濕度的房間會(huì )最小化這一效應。 - A basic understanding of relay types and switching configurations is helpfulwhen choosing an appropriate switch system.
基本了解繼電器類(lèi)型和切換配置有助于選擇合適的開(kāi)關(guān)系統。
