second order low-frequency wave force 二阶低频力
low frequency pulse wave 低频脉冲声波
low frequency square wave 低频方波
low-frequency square-wave 低频方波
Low-frequency surface wave 低频表面波
low frequency acoustic wave 低频声
Experiments of rock fracture verified that strong low frequency wave could be received both on the surface of rocks and in the air before the main fracture.
岩石破裂实验证实主破裂前在岩石表面和空气中均收到较强的低频波。
Based on wave acoustics, the low frequency sound field is analyzed in this paper, and reciprocity is verified both theoretically and experimentally.
文章根据波动声学的观点对房间内的低频段声场做分析，理论和实验都验证了这个结论。
Taken the Earth as material of antenna for receiving gravitational wave, the Earth behaves as a low-frequency gravitational detector.
将地球作接收引力波的天线物质，地球就成为了工作在低频段的引力波探测器。
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