Pentas五星花属pentadj.被关押的；被禁锢的动词pen的过去式和过去分词形式.pentaloid ambulacra瓣状步带(海胆)pentane thermometre戊烷温度计pentapetes phoenicea夜落金钱pentacyclic compound五环化合物pentoline bitartrate酒石酸喷托林pentamethine cyanine五甲炔花青pentadecylene diacid十五烯二酸pentamethylene oxide氧己环pentanuclcar complex五核配合物pentacarbonyl-iron[化] 五羰基合铁