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Pages: 80
Year: Issue:  5
Journal: Knowledge is Power

Abstract:  问:铜管乐器为什么多采用卷曲方式制作?答:法国号、小号等铜管乐器的号嘴与喇叭口之间都像蜗牛、蚊香一样盘卷成几个圆圈,这是为什么呢?我们知道蚊香制成盘旋状是为了让它点燃在限定空间范围内并且尽量延长时间.
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