The model indicates that the economicspread flux of central city to satellite city is in proportion to the capacity of traffic passages and industrial gradient between them.
模型表明主城对卫星城市的经济扩散通量与其间交通通道的通过能力及两城市间的产业梯度呈正比。
2
Now that economic pain has spread globally, the dollar is rising, which can hurt exports.
随着经济的阵痛扩散至全球，美元开始升值，也会由此打击出口。
3
However the slowdown in economic activity has spread outside the housing sector.