inverted arc

 
  • 倒弧

inverted arc的用法和样例:

例句

  1. There are no arc chutes and no arc by-products.
    没有弧滑道和没有弧副产物。
  2. 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。
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