对产业升级的动因的解释，传统经济理论主要是从需求收入弹性变化和生产率上升两个角度进行的。
The traditional economic theories think that the changing in the demand income elasticity and the productivity enhancing are two primary drives of the industrial upgrading.
（水平并购*：提供同类商品公司间的并购）。这种修改算得上是执行一项有益的整理工作：现行的指南制定于1992年，即不能反映经济理论的进步，也不能反映此后实务上的变化。
The update is partly an exercise in good housekeeping: the current guidelines were written in 1992 and do not reflect advances in economic theory and changes to actual practice since then.
随着新经济现象的出现，传统的经济理论发生了重大变化，过去不可能的事情如今已经变成了现实。
With the emerging of new economic phenomenon, the traditional economic theory changed dramatically. What was impossible in the past has now come into reality.
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