In this paper, the strong extremal principles have been proved for second or der linear elliptic equations on the domain which satisfies an interior cone condition.
本文对一般的二阶线性椭圆型方程，在满足内部锥条件时，证明了其强极值原理。
The experiment for the noise at the area around the driver' s ears is conducted, the results show that this model can predict very well the interior noise around particular point in frequency domain.
并针对驾驶员耳旁噪声进行了实验研究，结果表明：基于神经网络的单一工况车内噪声预测模型，可在频域内很好地预测出特定点的车内噪声。
The experiment for the noise at the area around the driver' s ears is conducted, the results show that this model can predict very well the interior noise around particular point in frequency domain.
并针对驾驶员耳旁噪声进行了实验研究，结果表明：基于神经网络的单一工况车内噪声预测模型，可在频域内很好地预测出特定点的车内噪声。
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