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bass tone control /ˈbeɪs ˈtəʊn kəntɹˈəʊl/ n

中文：低音调节钮

中文 · 低音调节钮Español · ajuste de tonos bajosFrançais · contrôle de tonalité des graves
Meaning：Button used to adjust the relative level of low-frequency sounds.
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Found in these illustrated scenes（3）

Bass guitar Portable radio Tuner amplifier front panel

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