There are many pathfinding algorithms, which have different search strategies, time efficiency and space efficiency. So they have different application situations.
路径搜索的算法有很多，不同的搜索算法有其不同的搜索策略、时间效率、空间消耗与应用场合。
Think of space efficiency and time efficiency as two opposite ends on a band (a continuum).
我们可以把时间效率和空间效率看作一个带状区域(看起来像某种光谱)的两个端线。
On the aspect of observation time, it has limited efficiency for low earth orbit target space-based observation, and good efficiency for high earth orbit observation.
在可见时间方面，天基空间目标光学监视系统对低轨目标的监视能力有限，而对高轨目标具有良好的监视性能。
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