屏幕底部的四个物理按键在肖像模式下分别用于锁定屏幕、浏览、返回上一屏幕以及并返回主屏幕，但我很少使用。
I rarely used the four physical buttons at the bottom of the screen (in portrait mode) for locking the screen, browsing, returning to a previous screen, and returning to the home screen.
旋转手机上下颠倒，或放到口袋里，以自动锁定屏幕和按键。
Rotate the phone upside down or put it into pocket in order to lock screen and keys automatically.
智能手机按键，将自动锁定在滑块闭幕（无确认信息） 。
Smartphone keys will be locked automatically at slider closing (without confirmation message).
多位组合式按键开关被广泛应用于各种家用电器，本课题在普通按键开关的基础上，改变其“扣板”的结构，实现了自动锁定功能，且不需增加成本。
In the papar, it changes its"buckle"structurt on the basis of common key switch, achieves automatic locking function and does not increase the cost.
手机按键上的屏幕锁定功能和手机侧边的一键式锁定功能，方便操作，以免老年人不注意放在口袋启动某特殊功能。
Screen lock from phone keypad and function lock from phone side button to make easy operation, to avoid phone to activate function without operation in pocket.
手机按键上的屏幕锁定功能和手机侧边的一键式锁定功能，方便操作，以免老年人不注意放在口袋启动某特殊功能。
Screen lock from phone keypad and function lock from phone side button to make easy operation, to avoid phone to activate function without operation in pocket.
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