數字鋼琴，Digital Piano, 俺的理解是電子琴是比較低檔一類電聲鍵盤樂器，

Electric vs Digital Pianos: Are They the Same Thing?

Let’s start by dealing with these somewhat clumsy labels and provide some clarity. While both digital and electronic pianos use electricity, they’re most definitely not the same thing.

If you’re looking for a piano that runs on electricity these days, whether on Amazon or in a showroom, you’re most certainly looking for a digital piano, not an electric piano, unless you’re specifically looking for a vintage instrument.

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https://www.merriammusic.com/blog/pianos-blog/electric-pianos-vs-digital-pianos/