短语词组短语token -bus 权标路线Token ring bus 令牌总线Token Passing BUS 令牌总线;符记传递总线Token n Bus 令牌总线Linear token passing bus 线性令牌传递总线Token -passing Bus 令牌总线;令牌环总线;令牌传递总线Token Bus Token Bus 令牌总线token bus architecture 符记总线架构 返回 token bus