Planetary perturbations make the earth's orbit about the sun irregular.
行星的摄动使得地球绕太阳的轨道是不规则的。
In this paper, a three species food chain model with impulsive perturbations e.
提出并研究了一类具有脉冲干扰和混合功能反应的三种群捕食链模型。
If we want to obtain three perturbations, the incident angel should be increased.
若想同时获得三个参数的相对扰动量，就必须增大入射角。
The system is excellent immunity to environment perturbations, the configuration is simple.
系统抗干扰能力很强，结构简单。
BNL confirmed that there had been discussion over the possibility of "perturbations in the universe".
BNL已经证实，它们曾经讨论过出现“宇宙微扰”的可能性。
BNL confirmed that there had been discussion over the possibility of "perturbations in the universe".
BNL已经证实，它们曾经讨论过出现“宇宙微扰”的可能性。
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