Therefore, plasma etching anisotropy can be improved by increasing rf frequency or rf-bias power.

因此，等离子体刻蚀的各向异性可以通过增加射频频率和射频功率来改善。

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Furthermore, we study the effects of various rf frequency on the voltage at the electrode, the sheath width, the IED and IAD impinging on the rf-biased electrode.

进一步，研究了射频频率对极板电位、鞘层宽度、极板上入射离子的能量分布和角度分布的影响。

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When the external RF frequency is much bigger than ion plasma frequency, ions answer average field.

当外加射频频率远大于离子等离子体频率，离子响应平均场，离子的密度分布几乎不随时间变化；

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Its state-of-the-art radio frequency (RF) performance exceeds requirements established by EMVCo and the NFC Forum.

ENGADGET: Qualcomm announces cheap, battery efficient NFC chip, hopes to put it in phones next year

The concerns stem from the emissions of radio frequency (RF) radiation by both the handsets and the base stations that transmit and receive the signals.

BBC: Public Petitions Committee