Truyền thông tin không cần pin
Cập nhật: 13:47 16/08/2013 GMT+7
Các nhà nghiên cứu tại Đại học Washington cho biết một kỹ thuật truyền thông mới cho phép các thiết bị không dây có thể liên lạc với nhau mà không cần pin.
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