signalingn.打信号；发信号动词signal的现在分词.signaln.信号；标志v.(发信号)通知、表示adj.显著的signal transmit信号传导signal position示意位置signaling trace信令跟踪signaling point信号点signal checking信号校验signal contrast信号对比度Signal regulate信号调理signalling link信令链路signal exchange信号交换signal analysor信号分析器