Extras for experts: Brace your hands against the back of a sofa and bend over at a 90-degree Angle.
专家支招：双手撑着沙发背，身体呈90度角弯曲。
Based on traditional bracing system of wind tunnel testing, a system of hanging brace of large Angle of attack was designed, which can reduce frame interference.
基于传统的风洞试验支撑系统，设计了能减小支架干扰的大攻角张线式支撑系统。
Spatial Angle brace is a kind of brace that the movement direction of supporting end is different from the direction of major elastic axis.
空间斜支承结构是指其支承端的运动方向与其弹性主轴方向不一致的支承。
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