名词
中文翻译：半角锥
同义词：
['semi-angle cone', 'half-angle pyramid']
例句：
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1.The half-angle cone is a useful tool for measuring angles.
半角锥是一种测量角度的有用工具。
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2.In the construction of buildings, the half-angle cone is often used as a structural element.
在建筑施工中，半角锥经常被用作结构元件。
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3. The half-angle cone is also known as the "half-angle pyramid" because it resembles a pyramid with a semi-circular base.
半角锥也被称为“半角金字塔”，因为它像是一个带有半圆形基座的金字塔。