And like a clock, they force you to look away from your screen now and again which is always a good thing.
并且就像钟一样,它们强迫你的视线又一次离开屏幕,这总是一件好事。
The system could also interact with additional sensors to detect the level of force when the finger touches the screen.
不仅如此,当人手接触到触屏时,这套系统还可以检测出人手的按压力度。
If there is no session object, we must have arrived at this servlet by mistake so we forward control to the login screen and force the user to log in properly.
如果没有会话对象,我们一定是错误地到达了这个servlet,所以我们将控制权转移给登录屏幕并强制用户正确登录。
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