钢琴虽已有数百年的历史,但直到今天它的踏瓣机械还不能说是很完善了。钢琴属高档乐器。无论家庭、学校或文艺团体都不希望所拥有的钢琴在十几年或几十年内就报废掉。因此生产者在设计、制作钢琴时应充分考虑到它的使用持久性和便于维修。 Although the piano has been hundreds of years of history, but until today its treadmill machinery can not be said to be perfect. Piano is a high-end musical instrument. Neither families nor schools or groups of artists want the pianos to be scrapped within a decade or a few decades. Therefore, producers in the design, production of the piano should give full consideration to its durability and ease of maintenance.