短語詞組短語open star cluster 疏散星團;開放星團open cluster of galaxies 疏散星系團Open Cluster Framework 基於開放集群框架;開放集群框架;群框架infinite open cluster 無窮開串Pleiades Open Cluster 昴宿星團young open cluster 年輕疏散星團open cluster -star-variable star 疏散星團恒星變星flare -open cluster and association 耀星 返回 open cluster