arced中文什么意思

vi. 形成拱状物（arc的过去式与过去分词形式）

例句与用法

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1. a common laboratory source of light is provided by a mercury arc .
   通常的实验室光源选用汞弧灯。
2. the indegree of a vertex v in d is the number of arcs with head .
   VD中顶点V的入度是指以V为头的弧的数目。
3. if the diameter of the pupil is 6 mm the eye is able to separate 120 seconds of arc .
   如果瞳孔直径为6毫米，人眼可分辨120弧秒。
4. the crack between the coped and hole was removed by air arc and then repaired by welding .
   在修割边和钻孔之间的裂纹用气弧消除，然后进行焊补。
5. a radian is the angle subtended by an arc of a circle whose length is just equal to the radius .
   一弧度就是长度刚好等于半径的一段圆弧所对的圆心角。