The neutral seat reference point was defined coordinate origin, then reach basket envelopes data of American air force men was converted to that of Chinese with coordinate transform.
以座椅参考点为坐标原点，采用坐标变换的方法将美国军用飞机飞行员的上肢可达区数据转换成中国歼（强）击机飞行员上肢可达区的近似数据；
From the angel of four dimensions vector and physics observation, this paper discusses the coordinate transform relationship between the relative movement inertia reference frames.
文章从四维矢量、物理观测的角度出发，就相互运动惯性系之间的坐标变换关系进行讨论。
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