The set of molecule symmetrical operation meets the definition of mathematical group.

分子的全部对称操作的集合完全符合数学群的定义。

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Ma, research manager of the visual Computing Group at Microsoft research Asia, is interested in the mathematical principles behind the processing and understanding of visual data.

马毅是微软亚洲研究院视觉计算组的主任研究员。他的研究兴趣在于视觉认知背后的数学原理以及对视觉数据的理解。

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This week, at the annual meeting of the American Physical Society's Division of Fluid Dynamics in Baltimore, Maryland, the group reported a mathematical formula explaining how wine sloshes.

本周，在马里兰州的巴尔的摩(美国一座港市)，每年的美国物理学会流体力学分会上，这个团队报告了描述葡萄酒晃动的数学公式。

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In teaching maths, for instance, both those countries spend more time on basic arithmetic than on deeper mathematical ideas, emphasise mental arithmetic, rely on standard teaching manuals and favour whole-class (as opposed to group) teaching.

ECONOMIST: Education and the wealth of nations