... eddy current testing method 涡流探伤法 eddy diffusion 紊流扩散；涡流扩散；扰动扩散 eddy diffusivity 紊流扩散率，涡流扩散度，涡流扩散率，涡团扩散率 ...
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考虑一维退化扩散过程的小扰动。
The small perturbations of one dimensional degenerate diffusion processes is considered.
对于低频扰动，当系统实现闭环控制后，像面上线扩散函数已接近衍射极限。
When the system close -loop controlling is realized for lower frequency perturbation, the approximate diffraction limited line spread function can again be achieved on the image plane.
扰动后的系统服从均匀分布，具有更为理想的扩散特性和置乱特性。
After being perturbed, chaotic system can generate chaotic binary sequences with uniform distribution and with statistic properties invulnerable to cryptographic analysis.
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