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。
The time estimation of arc movement was more close to the linear movement with the arc length than the chord length.
对弧线运动的时间估计，相比较与其运动轨迹等长的直线运动，更加接近于与其弦长等长的直线运动。
Miami got as close as 95-86 with 2:39 remaining on a four-point play by Wade, who was fouled by Bryant on a shot behind the arc and converted the free throw.
热火曾在比赛还剩2分39秒时由韦德大四分成功追到86-95，那时科比在三分线崴对韦德犯规，让韦德得到加罚的机会。
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