唱片常见转速有78,45,33⅓rp m。1 950年RCA和哥伦比亚有转速之争，并无胜负，33转Long Play在古典领域流行，45转Extended Play播放时间短适合单曲。这套女人心录制在10张20面7寸EP上，红色片基。 http://t.co/2QKP8tca
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唱片常见转速有78,45,33⅓rpm。1950年RCA和哥伦比亚有转速之争，并无胜负，33转Long Play在古典领域流行，45转Extended…
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