We used to weld pipes with direct current (D. c) so are welder (ac A. C. welder).
我们总是用直流(交流)电弧焊机焊收受子。
Deliveries of the PNVG for Special Operations AC-130 and MC-130 aircrews are in progress and are expected to be followed by deliveries for A-10 and C-17 aircrews.
为专门作战AC-130和MC-130机组人员提供的PNVG正在交付中，随后将向A-10和C-17的机组人员交付。
Amber HCE-relay. Miniature relay for wide applications. 1 form C. Coil voltage 240 V AC. Light emitting diode wired, plug-in. Standard type.
琥珀HCE -继电器。继电器广泛的应用。1表C线圈电压240伏交流电。有线发光二极管，插件。标准型。
In AC TIG welding, it needs add some complex control method to ensure the quality of welding, such as negative-pole atomization affects, D. c. of elimination and reduce, and arc stabilizing etc.
在进行交流TIG焊时，需要增加一些较复杂的控制方式，如：阴极雾化作用、消除和减小直流分量、稳定电弧等，以保证焊接的正常进行。
In AC TIG welding, it needs add some complex control method to ensure the quality of welding, such as negative-pole atomization affects, D. c. of elimination and reduce, and arc stabilizing etc.
在进行交流TIG焊时，需要增加一些较复杂的控制方式，如：阴极雾化作用、消除和减小直流分量、稳定电弧等，以保证焊接的正常进行。
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