在厚壁管、压力容器及电站锅炉的窄间隙全位置焊接中，钨极运动轨迹是动态的。
The synthesizing control scheme is put forward based on the requilement of narrow-gap all-position welding technology in terms of the moving track of tungsten electrode.
试试弹极运动吧！也许你曾听说过，但我怀疑很多人都没玩过。它会瞬间刺激你的肾上腺激素分泌。
Try Zorbing! You may have seen it, but I doubt many of you tried it. Creates a huge adrenaline rush.
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