... all-blank field ==> 全空字段 all-bottom sound ==> 低频声 all-capital earning rate ==> 全资本收益率 ...
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正是由于这种集声，即使是海洋中相对微弱的声音，尤其是低频声音，也能传播数千英里。
This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
介绍一种用于水声材料低频声性能测量的驻波管测试系统。
A standing wave tube measurement system is presented for measuring low frequency acoustic properties of underwater acoustic materials.
考察了海底沉积物参数、声源激发主频等对低频声传播的影响。
The effects of the sea sediment parameters and center frequency of the source on the low frequency acoustic wave propagation in shallow water are investigated.
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