下凹的按键表面增加了打字的舒适度。

Concave key surfaces add to the typing comfort.

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一印刷层， 设置于该触控式面板与该电路板相对面的对应表面，并印刷有相应的按键位置；

A printing layer is arranged on one face of the touch-sensitive panel towards the circuit board and printed with corresponding key-press positions.

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