求翻译：棉花异性纤维图像的灰度随异性纤维种类不同而不同，因此固定阈值法无法实现精确分割，需要采用自适应的动态阈值法。是什么意思？

The gray of the cotton the heterosexual fiber image varies with the type of foreign fibers, so the fixed threshold method can not achieve precise segmentation, adaptive dynamic threshold method.

cotton fiber picture sex with the opposite sex of the grayscale fiber different types in different parts of the world, which cannot be fixed threshold law, you need to achieve an accurate segmentation of dynamic adaptive threshold.

The cotton opposite sex textile fiber image gradation is different along with the opposite sex textile fiber type and is different, therefore the fixed threshold value law is unable to realize the precise division, needs to use the auto-adapted dynamic threshold value law.

Foreign fibers in cotton grayscale of the image varies with specific types of fibers, so fixed-threshold method was unable to achieve precise segmentation, method of Adaptive dynamic threshold was required.

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