open arc [冶] 开弧 ; 开启式弧 ; 开敞电弧
open arc welding 明弧焊 ; 明弧焊接 ; 明弧烧焊
open arc lamp 敞式弧光灯 ; 开敞弧光灯
open arc furnace 开弧炉
open-arc furnace [冶] 明弧炉
open arc lamp detail 室外弧光灯
lamp open arc 开弧灯
open-arc welding 明弧焊
The eclipse drew an arc across the open sea and uninhabited atolls, making its main landfall on remote Easter Island.
日食在开阔的海域和无人居住的环礁划出一条弧线，日落则在偏远的复活节岛。
If the gap is too small, an arc may develop when the contacts open and current continues to flow.
如果气隙太小，当触点开路时就会形成电弧，并且电流继续流通。
And also, the electric arc erosion of contact materials is engendered by heat effect of arc and other discharge phenomenon during the open and close of electric contact materials.
还发现触头材料的电弧烧损主要是触点在断开和闭合的过程中，产生电弧或其它放电现象的热效应所造成的。
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