The openness of region and cross-regional flow of factors of production are extremely important to regional economic development.
区域的开放与区域间要素流动对区域经济的发展至关重要。
参考来源 - 外商直接投资与中国区域经济发展·2,447,543篇论文数据，部分数据来源于NoteExpress
Because the payments for final goods and services must eventually flow back to the owners of the factors of production as income, income payments must equal payments for final goods and services.
因为为商品和服务所发生的支出，最终还是会作为产出商品的收入回流到卖家手中，收入和支出一定是相等的。
During the development, the production of producers is affected by many factors, such as the attenuation of formation energy, pressure sensitive effect and the attenuation of fracture flow capacity.
对于异常高压特低渗透压敏油藏注水开发困难，一般采用人工压裂依靠天然能量开发，开发过程中油井产量受地层能量衰减、压敏效应以及裂缝导流能力衰减等因素的影响。
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