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控制声波传播路径的宽带超薄吸声隔声结构
一种电磁推力灭火装置
一种新型超薄声波阻抗变换器
控制声波传播路径的宽带超薄吸声隔声结构
宽带超薄声波扩散结构
以吸声材料单元弱弹性级联为周期结构设计层的低频宽带吸声装置
小型机械单元平面阵列的低频宽带多层吸声装置
一种新型超薄声波阻抗变换器
宽带超薄声波扩散结构
一种电磁推力灭火装置
total32 3/4
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