求翻译：由多领域、跨时空限制的企业或部门协同完成的产品开发，已经成为生产设计单位较为普遍的需求。传统的设计理论和方法已经不能适应指导这种产品开发活动的要求，同时市场的变化、外部环境的变化和资源结构的变化对现代复杂机电产品开发理论和方法也提出了新的命题，复杂机电产品开发链这一概念及其相关研究正是在这种需求背景下产生的。是什么意思？

By the enterprise, across time and space constraints in the field or combination of departments of product development, demand for production design units have become more common. Traditional design theory and methodology have been cannot meet the guidance requirements for this product development activities, and market changes, changes in the external environment and resource changes in the structure of the modern theory of complex Mechatronics product development and methods were also put forward new propositions, the notion of complex Mechatronics product development chain and its relevant research of the demand for it is in this context.