平面夹角;
The relationship between the oblique line and every projection plane included angle, and It's application on problems proposed and solved were discussed in the paper.
本文论述了一般位置直线与各投影面的夹角相互关系问题及其在命题、解题方面的应用。
To eliminate the chattering of variable structure control ( VSC) in missile servo system for attitude control, the control law was expanded from second-order to n order on the basis of status trace and variable plane included angle.
为消除导弹姿态控制伺服系统变结构控制中的抖振,在状态轨迹与滑动平面夹角变结构控制律的基础上,将原来的二阶系统扩展为n阶。
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