Source: Computational Materials Science, Volume 266
Point lookups are useful, but the operation you'll reach for more often is a range query: give the tree a rectangular region and retrieve every point inside it, without scanning the entire dataset.
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陆逸轩：这要视具体作品而定，多数慢一点，有的也没有那么慢。以《c小调即兴曲》为例，正如你所说，这首作品开头有一种巨大的重量感，它引领我们进入一段非常严肃而深刻的旅程。
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