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1. zh.wikipedia.org › zh-tw › 平坦性平坦性 - 維基百科，自由的百科全書

   zh.wikipedia.org › zh-tw › 平坦性

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   系統科學中的平坦性（Flatness）是一種系統的特性，將線性時不變系統理論中的可控制性擴展到非線性 動力系統。具有平坦性的系統稱為平坦系統。平坦系統具有（虛擬的）平坦輸出，可以用平坦輸出以及其有限微分的組合來顯式表示所有的狀態以及輸入。

2. fractory.com › flatness-gdt-explainedFlatness (GD&T) Explained | Fractory

   fractory.com › flatness-gdt-explained

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   2021年3月30日 · Flatness is the 3D equivalent of the surface straightness control. While straightness has parallel lines representing its tolerance zone, the flatness tolerance zone is formed by two parallel planes. Thus, while straightness only makes sure that a single line on a surface has to be within the limits, GD&T flatness does the same for a collection ...

3. en.wikipedia.org › wiki › Flatness_(manufacturing)Flatness (manufacturing) - Wikipedia

   en.wikipedia.org › wiki › Flatness_(manufacturing)

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   Flatness is the condition of a surface or derived median plane having all elements in one plane. [1] Geometric dimensioning and tolerancing has provided geometrically defined, quantitative ways of defining flatness operationally . Flatness deviation may be defined in terms of least squares fit to a plane ("statistical flatness") or worst-case ...

4. redlux.net › gdandt › flatnessPractical GD&T: Flatness Measurement - Basic Concepts | ...

   redlux.net › gdandt › flatness

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   Flatness is often described as being “the 2D version of straightness”. A straightness requirement applies to a 1D (linear) surface trace or axis in 3D space, whereas a flatness requirement applies to a 2D (planar) surface in 3D space. A flatness measurement can be approximated by a series of straightness line-measurements but note that the ...

5. dictionary.cambridge.org › zht › 詞典flatness中文(簡體)翻譯：劍橋詞典 - Cambridge Dictionary

   dictionary.cambridge.org › zht › 詞典

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   flatness翻譯：平坦, 平坦, 无感情, 平淡；乏味。了解更多。 In the outer layer the large fourth-order moment (flatness) implies a highly intermittent signal, attributed to the entrainment of free-stream fluid by the large-scale boundary layer structure.

6. dictionary.cambridge.org › ko › 사전FLATNESS | Cambridge English Dictionary에서의 의미

   dictionary.cambridge.org › ko › 사전

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   FLATNESS 의미, 정의, FLATNESS의 정의: 1. the quality of being level and without curved, high, or hollow parts: 2. the fact that someone…. 자세히 알아보기. The flatness factor for all three gradients, computed similarly, is about 10 for jets and about 30 for wakes ; in general, wakes display larger int'ermittency.

7. zhuanlan.zhihu.com › p › 143326503知乎专栏 - 随心写作，自由表达 - 知乎

   zhuanlan.zhihu.com › p › 143326503

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