It is found that for the high power nearly perpendicular incident, electron cyclotron wave parametric processes may occur before it encounters the linear mode-conversion-layer.

发现对垂直入射的高功率的电子回旋波，在进入线性模转换层以前，参量不稳定性可以发生。

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These electrostatic waves are considered as either the ion acoustic mode evolution or the ion cyclotron mode evolution.

这些静电波被认为或者是离子声波模的演化，或者是静电离子逥旋波模的演化结果。

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