“helmholtz resonance sound absorber”的概念、定义、翻译、参考文献-科学参考

单词	helmholtz resonance sound absorber
释义	helmholtz resonance sound absorber 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。
随便看	almost certainly convergent almost closed almost closed mapping almost closed set almost complementary almost complex almost complex curve almost complex manifold almost complex structure almost conformal mapping almost contact manifold almost contact structure almost continuous function almost convergent sequence almost convex subset almost cyclic group almost degenerate amplifier almost direct product group almost disjoint sets almost equivalent almost everywhere almost everywhere continuous almost everywhere convergence almost everywhere convergent almost everywhere divergence

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