Sorry to compare this keyboard with the PSR 3000 but another improvement is the LCD Contrast Control which is on the black panel surrounding the screen, which is on the back of the 3000.
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释义
PSR-3000有一个缺憾是把LCD的调节旋钮放在键盘的背后,这里改善的是把它放到了LCD黑色边框的周围。
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