其装置特点是能够轴向直接观察电弧和熔池状态，从而便于控制焊接过程，保证焊缝的对中性。
The main feature of the device is able to observe arc and molten pool directly in coaxial direction so that the welding process is easily controlled and alignment of weld can be warranted.
电弧加热发动机是一种为航天器提供机动和控制推力的装置。
Arcjet is a kind of propulsion device for mechanical-operation and control of spacecraft.
本发明是对弧焊电源(俗称电焊机)的焊接电弧实现等功率或不同功率曲线控制的控制方法及装置。
The present invention relates to an arc power control method of arc welding power source and its device.
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