Symmetry group as a feature for bodies in assembling is defined.

定义了装配物体特征的对称群.

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We study partial differential equations ( PDEs ) by using symmetry group theory.

本文运用对称群的理论来研究几何中的偏微分方程.

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The symmetry group is the permutation group acting to exchange particles of the same type.

在对称组排列组表演交换微粒的同类型.

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The symmetry group approach in mechanical assembling is studied.

研究机械装配中的对称群方法.

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