One difficulty with direct methods is that the designer spends a great deal of time focusing on the velocity distribution; the geometry is secondary.
一个直接的方法就是难度设计者花费大量的时间专注于速度分布；几何为辅。
By focusing on ecific certification areas, secondary teachers ecialize in the subjects they want to teach.
中学教师只要在其喜欢的领域取得了相关的证书，就可以教他们想教的课程了。
This study combined engineering theory as a guide, focusing on secondary vocational schools, Tourism English curriculum development issues.
本研究以工学结合的理论为指导，主要关注中等职业学校旅游英语课程开发的问题。
This study combined engineering theory as a guide, focusing on secondary vocational schools, Tourism English curriculum development issues.
本研究以工学结合的理论为指导，主要关注中等职业学校旅游英语课程开发的问题。
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