名词中文翻译
中文翻译：有效截面
同义词：
['effective area', 'effective width', 'effective length']
例句：
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1. The engineer calculatedthe effective cross section of the beam to determine its strength.
工程师计算了梁的有效截面以确定其强度。
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2. The construction company used a steel girder with an effective cross section of 50 square meters for the bridge.
建筑公司使用了一块50平方米的有效截面的钢桁架来建造桥梁。
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3. The effective cross section of the tunnel is crucial for its structural integrity.
隧道的有效截面对其结构完整性至关重要。