[名词解释] 不相容元素(incompatible element)
[名词解释] 次要元素(minor element)
[名词解释] 附属元素(accessory element)
[名词解释] 分散元素(dispersed element)
[名词解释] 稀有元素(rare element)
[名词解释] 微量元素(trace element, microelement)
[名词解释] 微量元素(trace element或microelement)
[问答题] 相容元素(compatibleelements)