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    Analysis and Design of SP4T Switch

    Li, D. / Xu, R. / Xue, L. | British Library Online Contents | 1993

    Singular Perturbation Theory Applied to the Flight Control System Design

    Wang, Z. J. / Xu, R. J. / Jiang, Y. X. | British Library Online Contents | 1994

    The Stratosphere Active Experiments Program With Artificial Electron Beam Injection

    Ruzhin, Yu Ya | Online Contents | 1999
    Contributors: Xu, R.-I.

    Gamma-ray detector on board lunar mission Chang’E-1

    Ma, T. | Online Contents | 2008
    Contributors: Xu, R.