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。
The briachial-bridge luffing mechanism and curve slideway live control weight gravity balance system are the core technology. 臂橋架變幅系統和曲線滑道活對重自重平衡系統是其核心技術。