LP 的词源

1948年，long-playing（长时间播放）唱片的缩写。

The most revolutionary development to hit the recording industry since the invention of the automatic changer is the Long Playing record, which can hold an entire 45-minute symphony or musical-comedy score on a single 12-inch disk. ... The disks, released a few weeks ago by Columbia Records and made of Vinylite, have phenomenally narrow grooves (.003 of an inch). They are played at less than half the speed of the standard old-style records. [Life magazine, July 26, 1948]

自从自动换盘机发明以来，录音行业最具革命性的进展就是长时间播放唱片。这种唱片可以在一张12英寸的光盘上容纳整整45分钟的交响乐或音乐喜剧配乐……这些唱片是几周前由哥伦比亚唱片公司发行的，采用了Vinylite材料，沟槽异常狭窄（0.003英寸）。它们的播放速度不到传统老式唱片的一半。[《生活》杂志，1948年7月26日]