英语词汇piano roll怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	piano roll
释义	piano rolln.（名词） A roll of paper containing perforations corresponding to the notes of a musical composition, used in operating a player piano.钢琴滚动条，钢琴纸卷：含有与乐曲音符相对应的孔洞的纸卷，用以操作自动钢琴
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