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volume unit meters /ˈvɒljuːm ˈjuːnɪt ˈmiːtəz/ n

中文：音量表

中文 · 音量表Español · unidad de medición de volumenFrançais · vumètres
Meaning：Instruments measuring the relative intensity of the various sounds being broadcast or recorded.
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Found in these illustrated scenes（1）

Radio station and control room

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