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.
地球自转所产生的离心力矩是大陆离极运动的原因，由此而产生的极移使地球发生相应的形变。
The centrifugal torsion caused by earth rotation is the reason that the continents move of the pole. It makes the pole drift and the crust deformed.
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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