【电学】弧形工作轮、开关消弧（灭弧）【机械工程】弧形工作轮

volumetric modulated arc therapy(VMAT)

arc blow

length of arc

direct cruuent arc welder

arc

arc welding robot

self-regulating arc welding transformer【电】

electroslag remelting plant (electroslag refining plant) heating by electric arc