BUCK
发表于 2025-3-26 22:22:03
Desheng Lv,Yuting Wang,Chen Guo,Zhigeng Pan,Haibin Shiplates and acoustic fields is again illustrated by calculations of resonant frequencies for different plate cavity geometries. Another example considered is the excitation of a cylinder on the ocean floor. As the acoustic damping by porous materials is of importance in noise control, it is shown how
Foregery
发表于 2025-3-27 02:04:33
Mineralogical and Physical Characterisation of QwaQwa Sandstones,d the results were temperature dependant. The water absorption by total immersion revealed that the blackish sandstone had the highest percentage of 6.62 %. Furthermore, the greyish sandstone had the highest density (2.7235 g/cm.) and the reddish sample had the lowest (2.6502 g/cm.).
Indicative
发表于 2025-3-27 08:52:51
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审问,审讯
发表于 2025-3-27 13:28:52
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frugal
发表于 2025-3-27 15:32:07
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