![protostellar造句怎么写]( "protostellar造句怎么写")
- Alargecloudofgasanddustbeginstocongealgravitationally,startsrotating,andeventuallyflattensintoanobjectcalledaprotostellardisk.Theabsenceofprotostellarcloudmaterialandthelowvelocityofthestarsshowstheycouldnothavebeenbornrelativelyrecentlyorsailedinfro...
- 32712
中文谷