This is a specially designed magnet that allows an operator to steer the capsule around using external magnetic fields generated in a belt worn by the patient when he is being examined.
它是由一个特制的磁体制成，患者接受检查时会佩戴一条带子以产生一个外部磁场，这样医生就可以通过这个外部磁场来控制胶囊的方位。
The goal is a portable system that could be worn on a belt and would be no larger than a cellphone.
该研究的最终目的是开发一种可以放在腰带上手记大小的便携装置。
The system features a video camera and transmitter mounted in sunglasses, a visual processing unit, and a battery pack to power the device that is worn on the belt.
该系统采用了摄像机和发射器安装在太阳镜，视觉处理单元，以及电池组功率是在皮带磨损的设备。
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