inverse conical bore 反圆锥孔
I need a single-reed woodwind with a conical bore.
我需要带有一个圆锥孔的单簧木管乐器。
A slender woodwind instrument with a conical bore and a double reed mouthpiece, having a range of three octaves and a penetrating, poignant sound.
带有一个圆锥形孔和双簧管吹口的细小的木管乐器，具有三个八度音域和穿透力强而尖利的声音。
This series are universal type VTL of double column, used for inside and outside conical, end, cylindrical and bore.
本系列机床是万能双柱立式车床，可用作粗精车工件的外圆、内孔、端面及内外锥面等加工。
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