Máy quét trên mọi địa hình
Các nhà khoa học Nhật Bản vừa chế tạo thành công một loại máy quét hình ảnh (scanner) nằm gọn trên một tấm thẻ nhựa chỉ lớn hơn chiếc thẻ tín dụng một chút
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