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\bibitem{Yue-Feng_etal2018} {\textquotedblleft}\textit{Numerical simulation on particle density and reaction pathways in methane needle-plane discharge plasma at atmospheric pressure}{\textquotedblright}. Yue-Feng Z, Chao W, Wang W-Z, Li L, Hao S, Tao S, Jie P, Wuli xuebao \textbf{67}, 085202 (2018).   http://doi.org/10.7498/APS.67.20172192

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