名词
中文翻译：中心
同义词：
['center', 'midpoint', 'pivot']
例句：
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1.The centroid of the circle is at its center.
圆的重心在圆心。
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2.The weight of the object is evenly distributed around its centroid.
物体的重量在其重心周围均匀分布。
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3. The centroid of the triangle divides each side into two equal parts.
三角形的重心将每条边分成两等份。