“T9 keyboard layout”的概念、定义、翻译、参考文献-科学参考

单词	T9 keyboard layout
释义	T9 keyboard layout Encyclopedia 理学键盘布局释 T9 keyboard layoutT9键盘用于手机上的数字键盘布局，并在数字2～9按键上关联多个输入字母的一种键盘布局。
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