光束无法被固定在一点上被捕捉，这样只可以被用作为一种存储形式，而这也是很大的一个障碍。
That beams of light cannot be held stationary, and thus used as a form of memory store, is a big obstacle to doing this.
动态光束定向技术用于使光束传播方向保持不变，进而将成像目标稳定在视场中的某一固定位置。
The dynamic light beam pointing technology is used to keep orientation of light beam invariable, and light can be focused around some a fixed position in the field of view.
研究了当用固定不动的激光束扫描球心固定的旋转球体时扫描点在球面上的移动模式。
The motion pattern of a scanning point is studied in case a fixed laser beam is pointing at a rotating ball with fixed center.
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