Secondary production is the manufacturing and assembly process. This involves converting raw materials into components, e. G. Making plastics from oil, and assembling the product e. G. Building houses, bridges and roads.
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- 第二級產(chǎn)品是屬于制造和匹配的過(guò)程。它涉及到把原材料轉換成為組成單元,例如,制造用油作原料的塑料制品,也涉及到產(chǎn)品的分配,例如,構建房屋,橋梁和道路。
