By index evaluation and empirical analysis, we discuss the pattern and time gradient of Beijing-Shanghai railway's effects on regional spatial structure.

通过比较回归方程系数的大小变化、正负变化，研究京沪铁路对经济、社会、资源、环境的影响变化情况。

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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。

youdao

I mean we'd seen in last time, but the gradient is perpendicular to the level and points towards higher values of a function.

我的意思是，上一次我们讨论过了，这个梯度是垂直于等高线，并且是指向方程增长的方向的。

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The two-10-year spread also flattened hugely with the gradient of the curve falling below 200 basis points (2%) for the first time since October and ahead of the expected second round of quantitative easing.

FORBES: Bears On Steroids Emerge From Three-Year Torpor

Pushed for time and strapped for cash, the engineers laid eight miles of track straight up Big Hill, at a gradient more than twice the safe maximum.

BBC: The wonders of Canada by rail