By using acoustic methods, this paper studied the isotonic and isometric contraction of biceps under load to reveal the characteristics of sound production.
作者用声学法研究肱二头肌在负荷下等长、等张收缩、揭示其发声规律。
The results show that acoustic response feature of random vibration depends on the acoustic response function and the spectral density function of the stimulating load.
理论推导和实例结果表明，随机振动的声学响应特性取决于声学频率响应函数和激励谱密度函数。
Concrete was chosen for the construction of the load-bearing structure of the whole, due to its thermal and acoustic qualities and cost-effectiveness.
选择混凝土结构作为承载结构，是由于其热和声学品质以及成本效益。
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