Tracing a circle on your wrist tells the device to project a digital clock on your arm - the world's lightest wristwatch, a fan joked.
它在你的腕关节处绘制一个圆圈，并且要求装置在你的胳膊上投射出一个数字钟——开玩笑的说，这是全世界最轻的手表了！
The control system structure and mechanical architecture of self-tracing robot car based on ARM were outlined.
概述了基于ARM的自寻迹机器人小车控制系统结构以及机械架构。
The hardware of the self-tracing robot car control system based on ARM was designed.
设计了基于ARM的机器人小车控制系统的硬件平台。
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