t-periodic solutions t周期解
Almost Periodic Solutions 概周期解
time-periodic solutions 时间周期解
odd periodic solutions 奇性周期解
has periodic solutions 存在周期解
Then periodic advertisements are incorporated in the model and the existence and stability of positive periodic solutions are investigated.
同时在广告宣传是周期函数的前提下，讨论了正周期解的存在性和稳定性。
参考来源 - 产品——扩散模型的稳定性分析·2,447,543篇论文数据，部分数据来源于NoteExpress
The mathematicians turned to culling periodic solutions .
数学家们转而去挑选周期解。
In this paper, we study the periodic solutions of the impact oscillator with damping.
我们在这篇文章里主要对带阻尼的碰撞振子的周期解作研究。
The nonlinear resonant and non-resonant periodic solutions are obtained by the small parameter methods.
然后用小参数法求出了非线性的非共振周期解和共振周期解。
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