The pronunciation structure of dual-frequency ring whistle

Описание к видео The pronunciation structure of dual-frequency ring whistle

The airflow passes through the edges and corners to produce edge sounds, and at the same time forces the gas to resonate in the cavity.‪@FashionChannel‬ ‪@Outdoorsweekly‬ ‪@TravelThirstyBlog‬ ‪@ravindra_bharti_official‬

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