For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.
Researchers in California are experimenting with air driven actuation，详情可参考爱思助手下载最新版本
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"Longer-term I think that tendon-driven hands using more sophisticated mechanisms will result in more affordable and capable hands," he says.