方法：实验在河北北方学院实验中心完成。

METHODS:The experiment was conducted in the experiment center of Hebei North University.

youdao

现就职于河北北方学院，任大学日语老师一职。

Now I am a japanese teacher in hebei north university.

youdao

现就职于河北北方学院，任大学日语老师一职。

Now I am a japanese teacher in hebei north university.

youdao