arced

vi.

形成拱状物（arc的过去式与过去分词形式）；

arc welding电弧焊，弧焊；电弧焊接

arc furnace电弧炉，直接电弧炉

electric arc[电]电弧

submerged arc埋弧

plasma arc等离子弧，等离子体电弧；电浆弧

electric arc furnace[化]电弧炉

circular arc圆弧

submerged arc welding埋弧焊

argon arc氩弧焊

arc voltage弧电压

argon arc welding氩弧焊

arc length弧长

welding arc焊弧

arc discharge弧放电

island arc[地]弧形列岛

plasma arc welding等离子弧焊；等离子电弧焊接

joan of arc圣女贞德（法国民族女英雄）

metal arc welding金属电弧焊；金属弧焊接

manual arc welding手工电弧焊

arc welder电焊机；焊工

1. The first figure is an arc followed by a line.
   第一个图形是一段弧,后跟一条直线。
2. The beach swept around in an arc.
   海滩呈弧形伸展开来。
3. His arm described an arc in the air.
   他的手臂在空中划出一道弧形。
4. The rainbow formed a beautiful arc in the sky.
   虹在天上成美丽的弧形。

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