relation of... 的关系relationn.关系；联系；亲戚；陈述；参考relation of Maxwell麦氏关系relation-locating关系定位relation aggression关系攻击relation of between介于中间关系relation of learning学习关系relation of accident事件关系relation decomposing关系解析relation acquisition关系获取relation data-base关系数据库relation by marriage姻亲,裙带关系