On the other hand, research achievement on the symmetrical musicology theory is hardly embodied in music structural symmetry such as pitch organization.
另一方面，对称乐学理论的研究成果很少在音高组织等音乐结构的对称性中体现。
On the other hand, research of face recognition has great theoretical value, involving subjects of image processing, computer vision, pattern recognition, machine learning and so on.
另一方面，人脸识别的研究涉及到图像处理、计算机视觉、模式识别、机器学习等多个学科和领域，有着深刻的理论价值。
On the other hand, research of face recognition has great theoretical value, involving subjects of image processing, computer vision, pattern recognition, machine learning and so on.
另一方面，人脸识别的研究涉及到图像处理、计算机视觉、模式识别、机器学习等多个学科和领域，有着深刻的理论价值。
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