名词
中文翻译：子线
同义词：
['subsegment', 'subsegmentation']
例句：
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1. The engineer measured the length of the subspan accurately.
工程师准确测量了子线段的长度。
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2. The subspan was used to reinforce the bridge.
子线被用来加固桥梁。
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3. The subspan is crucial for maintaining the structural integrity of the bridge.
子线对于保持桥梁结构完整性至关重要。