demand saturation的意思|示意

Mature vehicle markets may be close to saturation, but there is huge unsatisfied demand in the big emerging car markets of Brazil, Russia, India and China (the so-called BRICs).

成熟的汽车市场可能已接近饱和，但是在巴西、俄罗斯、印度和中国(即所谓“金砖四国”)的新兴汽车市场中存在着巨大的未满足的需求。

With this model, we calculate the railway saturation level, the potential railway demand and the huge railway demand-supply gap of China.

通过这个数学模型，计算出了我国铁路路网长度的饱和水平、潜在的铁路运输需求以及铁路运输中巨大的供需缺口。