在硬件设计过程中，遇到的问题不是很大，但是在软件的设计中，主要需要解决的问题是单片机端口不够，必须复用。
In the hardware design process, the problem of is not very big, but in the software design, the main problem to be solved is enough to reuse, port.
系统级的复用需要人、过程和技术决策之间的相互作用，而且这一切必须在真实环境的约束下进行。
Systematic reuse requires the interplay of people, process, and technology decisions that have to be executed within the context of real world constraints.
为了复用现有的流程及服务构件，必须保证体系结构能适合于定制策略的变更。
To reuse the existing workflow and service artifacts, it is essential that the architecture enables late customization for policy changes.
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