improperadj.不合适的；错误的；不道德的improper equivalence非正常等价improper singularity非正常奇点improper consumption不当消费improper translation不当翻译improper explanation误训improper performance[法] 不适当的履行improper ventilation通风不良improper limit value非正常极限值improper behavior.不合宜的行为improper constituent反常分划