1·Helium is used for arc welding and leak detection, mostly, although NASA USES it to pressurize space shuttle fuel tanks.
虽然美国宇航局用它来给航天飞船的燃料箱加压，氦主要还是用来做弧焊和裂纹检测。
2·AC argon arc welding is used for the repair according to the leakage check and welding characteristics of aluminum materials, hardware device is strengthened, operation criterion are perfected.
采用的查漏方法，根据铝材的焊接特点选择交流氩弧焊进行修复，并采取增加硬件设施和完善操作规范的预防措施。
3·Including: Sawing, punching, turning, drilling, tapping, milling, polishing, wire-drawing, CNC processing, bending, forming and other deep processing, argon arc welding and assembly.
包括：锯切、冲压、车削、钻孔攻丝、铣、焊接、抛光、拉丝、数控加工、弯曲、成型等深加工、氩弧焊接、装配。
4·Connect the ground connection of the electric arc welding equipment as near as possible to the welding point on the part to be welded.
将电弧焊设备上的接地连接尽可能近地连接到将要焊接零件的焊接点上。
5·The plasma cloud charge sensor was applied to detect the status of keyhole molten pool during pulsed plasma arc welding, furthermore, the detected signals were studied.
将等离子云传感器应用于脉冲等离子弧焊穿孔熔池小孔状态检测，并对检测信号的波形特征做了深入研究。