The process model of product collaborative design is the basis of designing the modular and hierarchical collaboration-supported system.
协同设计过程模型为协同设计支持软件体系结构的模块化和层次化设计奠定了良好的基础。
The ZXA10 T600 adopts a hierarchical modular structure. It is divided into different functional units according to the service types, such as POTS service unit and DDN service unit.
ZXA10 T600综合接入局端业务汇聚单元采用分层式的模块化设计，按照不同的业务类型划分成不同的功能单元，如POTS业务单元、数字数据网DDN业务单元。
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