... angle of refraction,折射角 angle of spread,指向角；半扩散角 angle of view of telescope,望远镜视场角 ...
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讨论了迎角、吹气方式、喷管指向角及截面形状对机身侧力的影响。
The aim of this paper is to study the effects of normal and tangential blowing on the side force of forebodies with different cross section.
它以45度角指向外侧。
为了在一个类图上建模继承，从子类(要继承行为的类)拉出一条闭合的，单键头(或三角形)的实线指向超类。
To model inheritance on a class diagram, a solid line is drawn from the child class (the class inheriting the behavior) with a closed, unfilled arrowhead (or triangle) pointing to the super class.
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