...市； 住房供给； 空间梯度； 政策启示；[gap=981]Key words: transitional era; big cities; housing supply; spatial gradient; policy implications ...
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spatial gradient analysis 空间梯度分析
spatial gradient variations 空间梯度变化
spatial gradient distribution 空间格局
Based on non-local theory, the damage variable is non-local variable and is dependent on local damage variable and its second spatial gradient.
基于非局部理论，将损伤变量作为非局部变量，它与局部损伤变量及其二阶梯度有关。
Then, a multiscale morphology gradient-based watershed segmentation algorithm is introduced to segment the video frame in the spatial domain.
然后，引入基于多尺度形态梯度的分水岭分割算法，对图像进行空域分割。
In this paper, we will use spatial econometric analysis and static comparison analysis methods to study on the regional spatial impact and time gradient changes of Beijing-Shanghai Railway.
本文采用空间计量分析和比较静态分析的方法，研究京沪铁路对沿线区域空间结构的影响以及这种影响的时间梯度变化。
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