短语词组短語coronal activity 星冕活動;日冕活動coronal streamer [天]冕流coronal arch [天]冕拱Coronal valve 冠狀瓣coronal hele 冕洞coronal leakage 冠方滲漏radiation coronal 放射冠coronal anatomy 冠狀斷層解剖coronal gingiva 牙冠齦 返回 coronal