相平面

phase plane的用法和样例：

例句

The large drift motion of the ESG under the influence of the electric torques istreated theoretically by using the phase plane method.本文用相平面法讨论静电陀螺仪在静电场干扰力矩作用下的大范围漂移运动。
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。

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