The first line will pop up a message on the control nodes' display (if X Window System is active), letting the user know that the laptop is inactive and needs to be powered down.
第一行将在控制节点的界面上弹出消息（如果 X Window System 处于活动状态），从而让用户知道笔记本处于非活动状态并且需要关闭。
An adaptive controller which contains a filtered-x least mean squares algorithm(FXLMS) was applied to complete the active vibration control of a vehicle seat.
利用基于滤波X最小均方值算法的前馈型自适应控制系统，对汽车座椅振动实施主动控制，以改善座椅的动态舒适性。
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