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projective cover中文什么意思

發(fā)音:   用"projective cover"造句
  • 射影覆蓋
  • projective:    adj. 1.投影的，射影的。 2.凸出的，突出的。 3 ...
  • cover:    vt. 1.覆蓋，遮蔽，包裹；戴帽子；包庇，隱蔽，掩蓋； ...
  • projective cover degree:    投影蓋度
  • projective total cover degree:    投影總蓋度
  • projective:    adj. 1.投影的，射影的。 2.凸出的，突出的。 3.【心理學(xué)】投射的。 the projective power of the mind 想像力。
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例句與用法

  1. By using the projective covering method and projective covering probability , fractal and multifractal dimensions of different types of landform sueface above are computed . results show that all the studied landform surface are not simple fractals , but multi - range scaling fractals , and the fractal dimensions increase with the landform type from basin to mid - low mountain and high mountain . nevertheless , different type landscapes perform different dq - q curve shapes . which the dq value has the widest range in the high mountain type , the second one is the mid - low mountain type , and then the basin type
    對不同時段地震形變場圖象多重分形特征的研究表明，震源區(qū)及近震源區(qū)強震前垂直形變圖象都出現(xiàn)信息維降低，多重分形譜曲線dq變陡，值域范圍變寬的特征，說明在強震前地殼垂直形變出現(xiàn)了局部化、不均勻性增強的行為，這些對地震預(yù)報都有重要的實際意義。

百科釋義

    In the branch of abstract mathematics called category theory, a projective cover of an object X is in a sense the best approximation of X by a projective object P. Projective covers are the dual of injective envelopes.
    詳細百科解釋

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