名词
中文翻译：子结构
同义词：
['subordinate structure', 'subsystem例句：1. The substructure of the building is made of steel beams.（这座建筑的子结构是由钢梁构成的。）']
例句：
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1. The substructure of the building is made of steel beams.
这座建筑的子结构是由钢梁构成的。
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2.The substructure of the computer system is crucial for its performance.
计算机系统的子结构对于其性能至关重要。
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3. The substructure of the bridge supports the main structure and allows it to withstand heavy loads.
桥梁的子结构支撑着主结构，使其能够承受重载。