它允许您定义一个数据变化阈值，统计也只有数据变化阈值到达时才会更新。
It allows you to define a data change threshold, and statistics are refreshed only when the data change threshold is reached.
本文利用流化床内压降随表观液速的变化阈值来确定流化床的起始外循环流化速度。
The onset velocity was an important parameter that affected the normal operation of the gas liquid solid outer circulating fluidized bed.
探讨了基于DEM的VLL物方影像匹配方法、多尺度表达的数字高程模型，以及自适应窗口大小和变化阈值的确定等用于三维变化检测的关键技术。
And many key techniques such as VLL matching, multi-scale DEM, self-adapted matching window and thresholds for the framework are discussed and investigated deeply.
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