名词
中文翻译：铁三角
同义词：
['irontriangle', 'iron triangle network', 'iron triangle system']
例句：
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1. The engineer used an iron-triangle to measure the angles of theroof.
工程师用一个铁三角来测量屋顶的角度。
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2. The iron-triangle was acrucial part of the design process.
铁三角是设计过程的关键部分。
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3. The iron-triangle model iswidely used in engineering and architecture.
铁三角模型在工程和建筑领域被广泛使用。