名词
中文翻译：Unknown
同义词：
['Fraunhofer line', 'Fraunhofer beam']
例句：
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1. The Fraunhofer line is a crucial part of the research project.
弗劳恩霍夫线是该研究项目的关键部分。
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2. The Fraunhofer line was used to guide the construction of the new bridge.
弗劳恩霍夫线被用来指导新桥梁的建设。
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3. The Fraunhofer line is known for its high-quality products and excellent service.
弗劳恩霍夫线以其高质量的产品和优质的服务而闻名。