求翻译：基于以上分析，复杂机电产品语义开发链的基本结构可如下定义：ESDC ={O,D,T,R,S,C}，其中O为开发链的组织结构；D表示开发链中的产品数据；T为开发任务或活动集；R为开发资源；S为复杂机电产品开发链的语义支撑机制；C为复杂机电产品开发链的协同机制。是什么意思？

Based on the above analysis, complex electro-mechanical product development chain of basic semantic structure can be defined as follows: ESDC={O,D,T,R,S,C}, where o is the organizational structure of the development chain; d represents the product of the development chain data; t for a development task or activity set; r is the exploitation of resources; s semantic support mechanisms for complex electro-mechanical product development chain; c collaborative mechanisms for complex electro-mechanical product development chain.