speckled band
... speckled background 有斑点的背景 speckled band 分散频带 speckled butterflyfish 密点蝴蝶鱼 ...
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在轴承缺陷检测和诊断的过程中，有缺陷的轴承振动信号分散在一个较宽的频带范围，很容易被噪声和低频信号所掩盖。
In the process of bearing defect detection and diagnosis, the faulty bearing vibration signals are scattered in a wide frequency range, which can be easily masked by noise and low-frequency effects.
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