A mixture of LaBr?3 and Al?2O?3 is formed by the direct reaction of La?2O?3 with Al powder and Br?2. AlBr?3 is also formed with excess amount of Al and Br?2. Vapor complex LaAl?3Br??12? forms at high temperature.是什么意思_A mixture of LaBr?3 and Al?2O?3 is formed by the direct reaction of La?2O?3 with Al powder and Br?2. AlBr?3 is also formed with excess amount of Al and Br?2. Vapor complex LaAl?3Br??12? forms at high temperature.在线翻译_英语_读音_用法_例句