Rotating or moving the horizon line or other large components of the user's environment in conflict with the user's real-world self-motion (or lack thereof) can be discomforting.

旋转或移动水平线或用户所处虚拟环境中的其他大型组件，进而导致用户在虚拟环境中的感受和现实中的自我运动姿态的感觉相矛盾，而引发用户的不适感。

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It is applicable to rotating and stationary components that work in the harsh environment, such as the combustion chamber, turbine blades, turbine guide vanes, etc.

适用于旋转件和静止件，在恶劣环境中工作的部件，如燃烧室，涡轮叶片，导向叶片等。

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Especially the area of rotating sealing faces has to be minimized to the minimum, even under higher-pressure environment.

特别的是旋转封闭面大小必须减低到最低限度，甚至在较高的压力下。

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