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。
2
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。
3
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.