Welding machine control unit is equiped with no power source arc start unit, CMOS, and high power switch.
该焊机采用“无源引弧器”引弧，引入CMOS、时基、大功率开关等集成电路进行弧焊自动控制。
At the start of the movie, an arc of plasma arises close to the surface and balloons outward into space.
影片开始时，等离子体的弧线上升接近太阳表面并向太空膨胀。
To take away the refining part of the steel making cycle off an electric arc furnace, which is discussed elsewhere, is an excellent start.
把炼钢周期中的精炼阶段从电弧炉中移走（这个问题将在别处加以讨论），是一个良好的开端。
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