the stability condition的用法和样例：
例句
- Stability condition of the proportional control algorithm is given for a fixed target.
针对固定目标，文中给出了比例控制算法的稳定性条件。 - The stability of the helical equilibrium is analyzed with phase plane method, and an analytical criterion of stability is revealed.
用相平面法分析螺旋线平衡的稳定性，导出解析形式的稳定性条件。
