名词
中文翻译：Unknown
同义词：
['I section', 'I-type section例句：1. The engineer used a laser to cut the I-section spar for the bridge.（工程师使用激光切割桥梁所需的I型断面板材。）']
例句：
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1. The engineer used a laser to cut the I-section spar for the bridge.
工程师使用激光切割桥梁所需的I型断面板材。
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2.The construction company was required to use only I-section spar for the new building.
建筑公司被要求只使用I型断面板材建造新建筑。
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3. The I-section spar was chosen because it is stronger and more durable than other types of steel.
选择I型断面板材是因为它的强度和耐用性比其他类型的钢材更好。