These three computer-scientist brothers investigated the routers connected by optical or other communications lines and found that the topology of that network, too, is scale-free. 這三位電腦科學(xué)家兄弟研究以光纖或其他通訊線(xiàn)路連結的路由器,結果發(fā)現,這個(gè)實(shí)體網(wǎng)絡(luò )的拓樸也是無(wú)尺度的。