1. 蜗壳：6 disk轮盘 | 7 volute蜗壳 | 8 blade叶片

2. 涡形：voluminous 很多,丰富的 | volute 涡形 | volution 旋转

3. 螺旋形小室：volume transmission hologram 体积透过型全息图 | volute 螺旋形小室 | volute spring 锥形簧,锥形螺旋,板弹簧

4. 蜗壳螺旋形：volute蜗壳 | volute蜗壳螺旋形 | volutepump蜗壳式离心泵

noun

1. a structure consisting of something wound in a continuous series of loops

    e.g. a coil of rope

    Synonym: coilspiralwhorlhelix

2. ornament consisting of a curve on a plane that winds around a center with an increasing distance from the center

    Synonym: spiral