螺旋波等离子体是一种高密度的低温低气压等离子体。

Helicon plasma is a kind of high density, low temperature plasma in low pressure.

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因此深入研究螺旋波的形成及其动力学行为具有重要的意义。

It is very important to deeply study the formation and the dynamics of spiral wave.

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在螺旋波里，轨道则是逐渐弯曲，所以密度变大的区域是曲线状。

Then they shoot back down and wind through a 270-degree spiral.

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在螺旋波里，轨道则是逐渐弯曲，所以密度变大的区域是曲线状。

Then they shoot back down and wind through a 270-degree spiral.

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