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This paper introduced the design and application of a teaching aid for demonstration of the alveolar surface tension. This portable and easy-to-use teaching aid has been designed to improve the efficacy of clinical teaching and quality of health education for parents of children with neonatal respiratory distress syndrome. (本文介绍一种肺泡表面张力演示教具的设计与应用。该教具便携, 结构简单, 使用方便, 有助于提升临床教学质量, 提升新生儿呼吸窘迫综合征患儿家属健康教育质量。)