From the ontology of technology, the objectifiable reason of technology evolution is the value of technological structure evolution and the value of technological function evolution;
从技术的本体论看，技术进化的客体性原因在于技术结构价值和技术功能价值的进化；
However, the public school, as an imagined functional entity, has been confronting the separation of and conflicts between institutional structure and technological structure since the very beginning.
然而，公立学校这一想象中的功能协同体，自一开始就面临制度结构与技术结构的分离与冲突。
Against the machining difficulty of large narrow set impeller, at the same time of adjusting technological structure of impeller. Using entirely new machining technology for impeller is introduced.
针对窄系列大机号叶轮的加工难点，介绍了在调整叶轮工艺结构的同时，采用全新的叶轮加工工艺。
Against the machining difficulty of large narrow set impeller, at the same time of adjusting technological structure of impeller. Using entirely new machining technology for impeller is introduced.
针对窄系列大机号叶轮的加工难点，介绍了在调整叶轮工艺结构的同时，采用全新的叶轮加工工艺。
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