Blind people can hear content of the special web page with sound navigation by using keyboard to control the browser.
盲人借助语音导航功能，通过键盘的上下左右键就能浏览特定网站的网页内容。
In order to adapt to training simulator of antiaircraft fire control system. The paper develops a special keyboard for training.
为了适应高炮火控系统训练模拟器(以下简称训练模拟器)的需要，研制一种适合训练使用的专用键盘。
In order to adapt to training simulator of antiaircraft fire control system. The paper develops a special keyboard for training.
为了适应高炮火控系统训练模拟器(以下简称训练模拟器)的需要，研制一种适合训练使用的专用键盘。
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