Market data and analytics are derived from primary and secondary research.
市场数据和分析均来自小学和中学的研究。
The advantages of secondary research are that it is relatively cheap and easily accessible.
中学的优势，它研究的是相对便宜和方便。
Historians use a wide range of primary and secondary sources for their research.
历史学家在研究中使用大量的原始资料和二手资料。
Research has been undertaken using secondary and primary data collection methods.
使用二级和初级数据收集方法进行了研究。
Another research subject is the prediction of protein secondary structure.
论文的另一个研究主题是蛋白质二级结构的预测方法。
The Test Research on Secondary Arc of the Line with Compensation in the Power System .
电力系统潜供电弧有补偿情况的试验研究。
Therefore, for art and design secondary education, research teaching assistant teaching of more practical significance.
因此，对于艺术设计中学教育来说，研究电教化辅助教学更具现实意义。
Market research is generally either primary or secondary.
市场调研一般要么小学或中学。
Secondary school teachers 'mental health problem has seldom been concerned by academic research.
中学教师的心理健康题目一直以来较少受到学术界深入的关注。
Objective to research secondary brain injury in severe head injury clinical relevant factors.
目的探讨重型颅脑损伤二次脑损伤的临床相关因素。
Objective to research secondary brain injury in severe head injury clinical relevant factors.
目的探讨重型颅脑损伤二次脑损伤的临床相关因素。
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