A部分：焊接理论基础—闭卷考试；150道考题；
这为进一步研究焊接接头的抗断性能分析提供了一定的理论基础。
This provides a certain theory and criterion for us to further research the fracture-resistant capability of welded joint .
在数字信号处理及无损检测的理论基础上，分析了焊接过程对电流信号频谱的影响。
On the basis of digital signal process and nondestructive testing, the effect of welding process on the frequency spectrum of the current signal in AC spot welding is analyzed.
本分析方法为旋转体焊接接头强度校核提供了一定理论基础。
The analysis method provides some theories foundation for the safe assessment on welded joint strength in rotation blade.
本分析方法为旋转体焊接接头强度校核提供了一定理论基础。
The analysis method provides some theories foundation for the safe assessment on welded joint strength in rotation blade.
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