名词
中文翻译：区域定理
同义词：
['regional theorem', 'local theorem']
例句：
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1.The area theorem is used to calculate the volume of a rectangular prism.
面积定理用于计算矩形棱柱的体积。
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2.The area theorem states that the area of a triangle is equal to one-third of the product of its lengths and widths.
面积定理表明三角形的面积等于其长度和宽度乘积的三分之一。
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3. In the area theorem, the area of a region is equal to the sum of the areas of all itsconnected components.
在面积定理中，一个区域的面积等于所有连通组件面积之和。