Balance-of-system costs Cost of auxiliary hardware and installation of electrical systems. 系統配套費用電力系統輔助設備和安裝的費用。
Special welding auxiliary equipment is suitable for gyration work's welding dislocation, in order to gain perfect working position and welding speed. 專用焊接輔助設備，適用於迴轉工作的焊接變位，以得到理想的加工位置和焊接速度。
Therefore, the spring balancer is the necessary auxiliary tool for production. 因此，彈簧平衡器是工廠生產中不可缺少的輔助工具。
This flow graph can serve as an auxiliary tool for time domain analysis in modern control theory. 時域信流圖可以作為現代控制理論中時域分析法的一種輔助工具。
