短语词组短语bromobutane E 溴丁烷bromobutane U 溴丁烷bromobutane õ 溴丁烷n -Bromobutae 溴丁烷1 -bromobutane 溴丁烷;溴代正丁烷;溴正丁烷;正溴丁烷 返回 bromobutane