单词	振铃通知
释义	振铃通知〖信〗ringdown
随便看	niobium oxide niobium oxides niobium oxide thin film capacitor niobium oxychloride niobium penoxide niobium pentachloride niobium pentafluoride niobium pentaoxide niobium pentoxide niobium perovskite niobium perovskitedysanalite niobium potassium oxypentafluoride niobium powdder niobium powder niobium promoted vanadium pentoxide Niobium-pyrophanite niobium resource niobium rutile niobium rutileilmenorutil niobiums niobium self-baking electrode niobium series catalyst niobium silicide niobium silicide based alloy niobium sputtered superconducting cavity