电子束焊接具有显著的小孔效应，这一特点决定着电子束焊接过程和普通熔化焊不同，并对其焊接应力和变形产生重要影响。
Electron beam welding has significant keyhole effect, it induces the electron beam welding different from general melting, and also important influence on its welding stresses and distortion.
钢制容器人孔的焊接应力及塌陷变形，直接影响容器的焊接质量和使用寿命。
The notch welding stress and the collapse-deformation of steel container directly affects the welding quality and service life of the container.
钢制容器人孔的焊接应力及塌陷变形，直接影响容器的焊接质量和使用寿命。
Welding stress and concaving deformation of man-hole of steel vessel influence directly welding quality and life of using.
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