The new scheme based on J2EE system structure uses the middle part technology and parametric collocation and designs on different levels.
新系统采用中间件技术，基于J2EE 体系架构，分层次设计，参数化定制。
The new tensile technology of the middle roof plate can improve the manufacture quality of the roof steel structure efficiently.
中顶板拉伸新工艺可有效提高车顶钢结构制造质量。
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