mutual relationship; interrelationship; interaction
intercommunication (usu. in telecoms contexts)
mutual assured destruction
cross connection; interconnection; internetworking
mutual use of company facilities (e.g. rail tracks for through service, airport facilities, code-sharing, etc.)
① 外国人に権利を認める場合に、その本国が自国民に同様の権利を認めていることを条件とする主義。
mutual visitation; reciprocal visits
interchangeability; interoperability
transinformation (content); transferred information; transmitted information; mutual information
interconnection; interoperability
law of quadratic reciprocity