Nor, Mr Phelps has written, does it mean "a pristine element of nature not susceptible to intervention by man."
而意味着“自然的原始成分不容易被人们介入操纵”,菲尔普斯先生这么写道。
Although you could model all your data without attributes, they can be a very intuitive choice for data items which are known in advance to never repeat (per element) nor have any sub-fields.
虽然不用属性也可以对所有数据进行建模,但是对于预先知道不会重复(对于每个元素而言),也没有任何子字段的数据项,使用属性仍是最直观的选择。
However, neither major element nor trace element geochemical characteristics can be explained by a simp le model of magmatic origin.
但是,无论是主元素还是痕量元素地球化学特征,均不能用单一的岩浆成因模型得到解释。
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