产品在设计、工艺及材料有重大变化时应做型式检验。
In product design, process and material have a major change in type test should be done.
重点阐述工艺分析和设备设计原理，结构型式。
It emphasizes the technology analysis, the design principle and the structural model.
重点阐述工艺分析和设备设计原理，结构型式。
It emphasizes the technology analysis, the design principle and the structural model.
应用推荐