To particularize the implementation of the concurrent process planning systems, and put forward the functional requirements and architecture of product manufacturability evaluation.

说明了并 行工艺设计系统的实现方法，了产品可制造性的功能要及其体系结构。

Based on practical example,the authors of this paper particularize the method how to deal with the crevice and give some suggestions to prevent it.

结合工程实,说明了预应力管桩缺陷部分的加固机理和加固方法,并从施工角度给了合理的预防裂缝现的建议。