elemental
单词辨析：
强调基本的、简单的，或指事物处于初级阶段的，通常作定语。
The lawyer was ignorant of even the most elementary facts.
那位律师连最基本的事实都不知道。
It might be better to send them to a private elementary school.
送他们到私立小学或许比较好。
Here it refers to elementary education, starting with simple reading and basic skills.
这里指的是从简单阅读和基本技能开始的基础教育。
指作为事物的基础或本质的，通常作定语。
elemental features/forces
基本特征/自然力
Love and hatred are two of the most elemental human emotions.
爱和恨是人类最基本的两种情感。
指反映事物本质的，强调重要性。
In all cases, the fundamental principles remain the same.
在任何情况下，基本原理保持不变。
There are fundamental differences between your political beliefs and mine.
你我的政治信仰根本不同。
指在重要性方面占据首位的，通常作定语。
Our primary concern must be the children.
我们首先要关心的必须是儿童。
Good health care is of primary importance.
良好的医疗保健是重中之重。
相关例句：
The structures of intermediates and the desired product are confirmed by1H NMR and elemental analysis.
所有的中间产物和目标产物均经1H NMR和元素分析确证。
The silicic volcanic rocks of Carboniferous times has similar REE and trace elemental geochemistry as continental rhyolite.
石炭纪酸性火山岩的稀土和微量元素地球化学特征与陆内流纹岩相似。
The product has been characterized in detail by elemental analysis, infrared, UV, NMR spectra, DSC and TG etc.
其产品的特性用元素分析，红外和紫外光谱，NMR，DSC，TG等进行了详细地表征。
The results show that some elemental contents change obviously after cerebral ischemia and change with time.
结果表明，某些元素的含量在脑缺血后有显著变化，并随时间而变。
If we can determine the elemental composition of this glass.
如果能验明这些玻璃的基本成分。
One kind of elemental atoms and all other elemental atoms are variant.
一种元素的原子与所有其它元素的原子是不同的。