Arc Burns. Localized points of surface melting caused by arcing between electrodes or ground and pipe surface.

电弧烧伤。由于电极(含接地极)与管子表面之间起弧而产生的局部表面熔化点。

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All carbon arc gouged surface areas shall be ground to clean bright metal prior to subsequent welding.

开始后续焊接前，所有碳弧气刨面区域应接地至洁净明亮的金属。

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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。

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When asked last year about the rules of engagement for tear gas, he told the BBC that police in America are trained not to fire head-high and to either arc the canister into the air or roll it on the ground.

BBC: Bahraini dies after being struck by tear gas canister