装配模型的结构体现了自项向下的设计理念，实现了装配树层次信息、配合信息和零件信息的分别管理。
The model embodied the top-down design idea, achieved the respective management of assembly architecture information, mate information and parts information.
它可有效支持自顶向下的并行产品设计以及与主模型相关的可制造性设计和可装配性设计，以缩短产品开发周期。
It not only effectively supports the top-down combine product design but manufacturing design and assembling design related to main model as well so as to shorten the period of product development.
虚拟装配是虚拟制造的关键技术之一，它能有效支持自顶向下的并行产品设计以及与主模型相关的可制造性设计和可装配性设计，以缩短产品开发的周期。
As well as the manufacturing possibility design and assembling possibility design correlated with the master model, which will greatly reduce the products research and development period.
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