然而，原始研究依然并未涉及对照组。
However, once again, the original studies did not involve control groups.
历史学家在研究中使用大量的原始资料和二手资料。
Historians use a wide range of primary and secondary sources for their research.
为了利用这一电流，研究小组在两个原始细胞上连上了小型电极。
To make use of this electrical current, the team connected tiny electrodes to the protocells.
这是一种建立在原始“同音异义”关系上的研究方法。
This is a kind of research method based upon the primitive "homophonic" relations.
作者研究了全部有关的原始资料。
其结果是相对原始的地表特性得以保存可供研究和分析。
As a result, relatively primitive surface features are preserved for study and analysis.
现在著名“肌肉贴片”是研究被测试产生大量获取肌肉在未经训练的肌肉里即原始肌。
The now famous "muscle patch" was research tested to produce massive gains in raw muscle.
并对原始晶粒尺寸的影响作了初步研究。
The influence of the initial crystal grain size is also investigated.
本文对原始绘画、儿童绘画和现代绘画中的稚拙美进行了分析研究。
This paper analyses the immature beauty of the original painting, children painting and modern painting.
本文研究了图形平台下原始拓扑的形成过程。
The forming process of original topology under graphic platform is studied.
本文用高尚堡油田的测压资料研究了油田的原始地层压力分布规律。
This Paper has Studied the regularity of the distribution of initial reservoir pressure.
这项研究的截止年份是2005年。在那时候人们的社交方式还是比较初级和原始的。
The cut-off year for the study was 2005, when socialising was more primitive.
原始森林，这份研究报告说，继续碳螯合许多世纪。
Old growth forests, the study said, continue to sequester carbon for many centuries.
原始森林，这份研究报告说，继续碳螯合许多世纪。
Old growth forests, the study said, continue to sequester carbon for many centuries.
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