录音技术引发音乐版权制度变革，缘起于1895年后自动钢琴（player piano rolls）的普及。 由于自动钢琴能够自行演奏音乐，使得音乐产业开始由单一的乐谱发行转向录音制品发行，不但新旧产业主体之间由此出现纠纷...
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player piano rolls
自动钢琴卷
以上为机器翻译结果，长、整句建议使用 人工翻译 。
"What are you doing," his older brother cried one day, seeing les punching new holes in the player-piano rolls.
“你在做什么，”有一天他的哥哥大喊，因为他看见Les正在给钢琴卷冲压新的孔。
youdao
The player-piano rolls in the transmitter (aboard the ship) and receiver (in the torpedo) would be started at exactly the same moment, and would then stay synchronised after launch, providing a secure radio link from the ship to the torpedo.
ECONOMIST: Player-piano pioneer
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