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亥姆霍兹共振吸声体
释义
亥姆霍兹共振吸声体
Encyclopedia
工学
亥姆霍兹共振吸声体
释
helmholtz resonance sound absorber
亥姆霍兹共振吸声体
一个硬质内表面的腔体通过短管与外界的大气联通构成的吸收声能、降低声音的构件。
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Miscellaneous Morsels from Youyang - On Painting
miscellaneous music melody
Miscellaneous News from Guixin Street
Miscellaneous Notes by the Rustic while Warming Himself under the Sun
Miscellaneous Notes of Unzen
Miscellaneous Notes on Calligraphy
Miscellaneous Notes on Mountain and Stream Painting
Miscellaneous Notes on Songs from the Music Bureau
miscellaneous paintings
Miscellaneous Plants
Miscellaneous Poems
Miscellaneous Poems by Zhang Xie
Miscellaneous Poems Collected in the Jihai Year
Miscellaneous Record of Yijue Liao
Miscellaneous Records by Sun Zongjian
Miscellaneous Records for Painting Bamboos
Miscellaneous Records from the Erlao Hall
Miscellaneous Records of A Man Awaking Alone
Miscellaneous Records of Historical Documents from Jianyan Period
Miscellaneous Records of Mentors and Friends
Miscellaneous Records of Peking Opera
Miscellaneous Records of Pine Window
Miscellaneous Records of Qingbo
Miscellaneous Records of the Western Capital
miscellaneous song and ballad
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