A concept of kernel matrix of quaternion is proposed, which is based on rotation group algebra and with spacecraft attitude control as its background.
基于旋转群代数，以航天器姿态控制研究为背景，提出了四元数的核心矩阵的概念。
In the blank control group, no rotation was observed, and there was no abnormality of pathological observation.
空白对照组无旋转现象，病理学观察无异常现象。
Keep this in mind, even though you or even a large group of us can do much to change the earth's location or rotation. we can affect it a little bit.
请记住，即使是你或者是我们一大群人能够为改变地球的自转或位置做出许多事，我们能在极轻微程度上产生影响。
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