单词	throat plane
释义	throat plane 喷管临界截面
随便看	signalling in band signalling in-band signalling indicator signalling information signalling information field SIGNALLING in telephonic or telegraphic systems signalling key signal l ing key signalling key of pull type signalling key of push type signalling lamp signalling lamp for air horn signalling layout signalling light for air horn signalling link signalling link blocking signalling link code signalling link group signalling means signalling message handling signalling methods signalling mirror signalling module signalling network signallingnetwrok