The DXF and DWG file formats also support arcs and circles, which you can approximate in your output formats by creating multiple small line segments approximating the circle or arc.

DXF和DWG文件格式还支持弧和圆，您可以在输出格式中通过创建多个小线段来近似模拟圆或弧。

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A current arcs between them and turns the surrounding air into a plasma by stripping electrons from their parent atoms. Waste (chopped up into small pieces if it is solid) is fed into this plasma.

其间存在弧电流，还会将周围空气电离，将电子从原子中剥离出来，产生的废物被注入进这些等离子体中。

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The film is on solid ground when it focuses on small-scale character work and emotional arcs, but the big-scale action is frankly somewhat boring and mostly uninspired.

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The researchers synthesised a small quantity of nanotubes by passing high-voltage electrical arcs through graphite dust mixed with a carefully chosen catalyst one of several competing methods.

ECONOMIST: Space-age soot