钢琴门板杂音的排除张旭钢琴一般经过几年弹奏后，大多会出现这样或那样的问题，如不加以调整和修理，问题就会越来越大，钢琴使用寿命因此缩短。由于机械毛病琴体发杂音，弹奏者会感到弹奏不顺手和产生烦躁心情，影响整个弹奏效果。机械问题已有很多文章论及，本文仅谈一... Exclusion of piano door noise Zhang Xu piano after playing a few years generally, most of these problems will appear, if not to be adjusted and repaired, the problem will be more and more, thus shortening the life of the piano. Due to the mechanical problems of piano body hair, the player will feel difficult to play and irritability, affecting the overall effect of playing. Mechanical problems have been discussed in many articles, this article only talk about a ...