释义 |
atomic number 53 基本英英 英Noun:a nonmetallic element belonging to the halogens;used especially in medicine and photography and in dyes;occurs naturally only in combination in small quantitiesas in sea water or rocks
Noun: a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities as in sea water or rocks |