启发式是在计算机易于攻击时关闭空窗的一种主动检测形式。
Heuristics are a form of proactive detection that closes the window during which computers are vulnerable.
在计算信号的协方差矩阵时，对图像分块并用椭圆窗滑动求局部协方差矩阵，以达到局部自适应的去噪目的。
When the signal covariance is calculated, the image is cut into several blocks and the elliptic window is used, so the local covariance is achieved.
文中介绍用模糊数学的方法自动构组一个时窗内反射特征变化的平面图，并在VAX计算机上编制了程序。
It is stated how the fuzzy method is used on a VAX computer to automatically construct a plane map of the reflection character changes in a time window.
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