在扬琴上安装滚轴,是起微调器作用,以保证扬琴在调弦后以及遇到气候变化时,可使音调得到准确的调整。由于目前扬琴的琴身及琴弦张力的增大,使琴弦对滚轴的压力也随之增大,这给演奏者调音带来许多不便。主要是在调弦过程中,滚轴总有一面(常常是接触弦的那一面)进行滑 Install the roller on the dulcimer is a role of a fine tune to ensure that the dulcimer tuning and in the face of climate change, the pitch can be adjusted accurately. Due to the current dulcimer body and strings tension increases, so that the string pressure on the roller also increases, which gives the player tuning a lot of inconvenience. Mainly in the tuning process, the roller always have one side (often contact with the chord side) slip