There are often a large number indefinite factor that stimulate some variation in market, lead to market environment that aggravate risk and disorder, result in the change on consumption demand.
市场中往往有着大量的不确定性因素，这些因素共同激发了不小的变化，产生不断加剧风险和混乱的市场环境，导致消费需求的变异。
The paper reaches a conclusion that industrial evolution is in nature a change of the combination of production factors, where technical factor plays a leading role in both supply and demand aspects.
通过本文的研究可以得出这样的结论：产业演化实质是要素组合的变动，技术要素在要素组合中起着主导性作用，技术进步通过供给、需求两方面主导产业演化。
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