长号是西洋乐器中的一种,也是交响乐队(又称“管弦乐队”)中的一件重要乐器。它在交响乐队中,属于铜管乐器组,与大号、小号、圆号、萨克斯号等共为一组。长号在中国俗称“拉管”或“伸缩喇叭”。由杯形号嘴、U形伸缩滑管、主体管三部分组成,均为铜质,故是名副其实的铜管乐器。它可以自由伸缩,依靠长短分为七个“把位”(最短为第一把位,最长为第七把 Trombone is one of the Western instruments, is also an important instrument in the symphony orchestra (also known as “orchestra”). It is in the symphony orchestra, belonging to the brass instrument group, and a large number, trumpet, French horn, saxophone number for a group. Trombone commonly known in China as “pull tube” or “trombone.” By the cup-shaped mouth, U-shaped telescopic slide tube, the main tube of three parts, all copper, it is a veritable brass instrument. It can be freely scalable, depending on the length is divided into seven “bit” (the shortest first bit, up to the seventh