Therefore, the large parts of the material, nondestructive detection, structure design, machining and heat treatment until the assembly test, every step is very strict.

因此，各大型零部件的选材、无损检测、结构设计、加工与热处理直到组装试验，每一步都要很严格。

youdao

Therefore, the large parts of the material, nondestructive detection, structure design, machining and heat treatment until the assembly test, every step is very strict.

因此，各大型零部件的选材、无损检测、结构设计、加工与热处理直到组装试验，每一步都要很严格。

youdao