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third valve slide /ˈθɜːd ˈvalv ˈslaɪd/ n

中文：第三活塞滑管

中文 · 第三活塞滑管Español · tercer pistón móvilFrançais · coulisse du troisième piston
Meaning：Curved tube that, when the third valve is pressed, lowers notes by three semitones.
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Trumpet

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