求翻译：第二部分，从高中历史教科书中的史料认知、高中历史教科书中史料运用的重要性和可行性等角度，阐述高中历史教科书史料元素实效性研究的立意。是什么意思？

The second part, from the high school history textbooks in the awareness of historical, high school history textbooks used in the historical importance and feasibility point of view to explain the elements of high school history textbooks and historical study of the effectiveness of conception.

正在翻译，请等待...

The second part, from in the high school history textbook historical data cognition, the high school history textbook historical data angles and so on utilization importance and feasibility, elaborates high school history textbook historical data element effectiveness research deciding.

The second part, historical awareness, from a high school history textbooks in senior middle school history textbook historical importance and feasibility of application of point out high school history textbook study on the effectiveness of the conception of historical element.

The second part, from the high school history textbooks in the awareness of historical, high school history textbooks used in the historical importance and feasibility point of view to explain the elements of high school history textbooks and historical study of the effectiveness of conception.