Because energy threshold decides to when cluster-head rotation happens, the selection of threshold is critical.
因为簇头何时轮转由能量阈值决定，所以阈值的选取非常关键。
The module pops up a thumbnail window activated by your selection of an option in the threshold drop-down list.
这个模块会弹出一个缩略窗口，它是由您在临界值下拉列表的选择所激活的。
Temporal segmentation was based on change detection, whose key factor was the selection of appropriate threshold by histogram analysis.
时间分割采用变化检测，其关键的阈值选取通过直方图分析得到。
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