To draw this boundary, physicists and mathematicians use a distorted length scale similar to escher 's, squeezing an infinite distance into a finite one.

为了画出这个边界，物理学家和数学家利用了类似于艾雪所用的扭曲尺度，将无穷大的距离压缩成有限的长度。

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To detect stall inception signal before the whole compressor running into deep rotating stall, a method based on averaged numerical difference is developed to detect short length scale disturbance.

为在压气机整机进入深度失速前检测到失速起始信号，提出了一种基于平均数值差分的短周期扰动检测方法。

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To detect stall inception signal before the whole compressor running into deep rotating stall, a method based on averaged numerical difference is developed to detect short length scale disturbance.

为在压气机整机进入深度失速前检测到失速起始信号，提出了一种基于平均数值差分的短周期扰动检测方法。

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