The sound insulation property of aluminum foam(Al-foam) with composite structure was studied using a self-made equipment and sound detector.
采用自制的试验装置对泡沫铝与实体铝复合结构的隔声性能作了研究。
By using computer simulation and numerical computation of OTF, the image property is analyzed for the case of different annular lenses and detector in confocal scanning system.
用计算机模拟和光学传递函数数值计算，分析了采用不同环形透镜及探测器对系统成像特性的影响。
Pointing to the property of photoconductive multiunit infrared detector, an automatic testing system for uniformity of infrared detector is developed.
针对光导型多元红外探测器特性，研制了红外探测器均匀性自动化测试系统。
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