·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N a yellow, brownish, or black radioactive mineral consisting of tetragonal thorium silicate. It occurs in coarse granite and is a source of thorium. Formula: ThSiO4 钍石
The plumbothorite discovered for the first time is a new variety of thorite.
铅钍石是钍石的新变种,属首次发现。
youdao
应用推荐
模块上移
模块下移
不移动