Special for mullion V-shaped welding and cross welding cleaning.
专门用于塑料门窗中梃V型焊接及十字焊接焊缝的清理；
It showed that the weld cross section with both laser welding processes transformed from nail shape to near X shape with increase of laser power and decrease of welding speed.
结果表明，随激光功率增大和焊接速度降低，复合焊与单一激光焊焊缝的横截面形貌均由钉形向近X形转变。
Industrial mechanics and mill wrights may be cross-trained in a second trade such as pipefitting, welding, machining or electrical maintenance.
工业机械师和维修工在第二行业中可以交叉培训，如管件，焊接，机械加工或电器维修。
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