self-balancing system的用法和樣例：
例句
- A null-balance system is provided by balancing the magnetic forces by electrostatic forces.
零位平衡系統是靠靜電力來平衡磁力而造成的。 - A good balancing system also provides a very safe charging and discharging platform, which is critical when handling LiPo batteries.
一個良好的平衡系統還提供了一個非常安全的充放電平台，這是關鍵的時候處理脂電池。
