It occurs chiefly as stannic oxide , SnO 2 in cassiterite.主要以氧化物状态存在.One of the key problems in its origin is the solubility of cassiterite in granitic melt.锡石在花岗质熔体中的溶解度,是阐明花岗岩全岩型锡矿成因的关键....
Conclusions: Unilateral masticatory is one factor of TMD etiology.结论偏侧咀嚼是颞下颌关节紊乱综合症的病因之一.Objective To determine the three - dimensional muscle force vectors of masticatory muscles.目的通过可视化人体图像确定咀嚼肌的三维肌力向量.Results: There a...