free oscillations meaning in Chinese

自激振荡
自由振荡
自由振动

Secondly , this paper illustrated the nonlinear phase dynamic theory of the aia array and the application of it to power - combining and beam - scaning technique . according to these theories , the coupling parameter of nearest neighbors was found by experiment , then the two - element and three - element aia array were designed , and the result of measurement was in agree with that of the nonlinear phase dynamic theory , and the beam - scaning of two - element array was realized by tuning the free oscillation frequency of the elements
其次，本文讨论了有源集成天线阵列的非线性相位动态理论以及它在功率合成和波束扫描方面的应用，包括同步工作条件、稳定条件和相位动态方程等，通过实验确定了阵列中相邻单元间耦合参数，并将之运用于有源集成天线二元阵和三元阵的设计，实验结果与理论结果吻合较好。