[1] XU J W, WANG J Y.Application and Development of electrochemical machining in the aviation manufacture ［J］.Aeronautical Manufacturing Technology, 2002(4): 21-30.(in Chinese)

[2] JIA B X, WANG ZH L, ZHAO W SH.Techniques of machining micro holes based on non-traditional machining ［J］.Electromachining & Mould, 2005(4): 1-5.(in Chinese)

[3] WANG ZH L, ZHU B G, TIAN X Q.Research on dry EDM for deep and small holes ［J］.Acta aeronautica et astronaut ica sinica, 2007, 28(2): 460-463.(in Chinese)

[4] MASUZAWA T, MOBER W, TOMAS B, et al..Drilling of deep micro-hole by EDM ［J］.Annals of the CIRP, 1989, 38(1): 23-27.

[5] WANG X Y, LI J L, ZHOU B, et al..Electrical discharge machining for small-holes by current dividing［J］.Opt. Precision Eng., 2009, 17(11): 2730-2737.(in Chinese)

[6] WANG J Y, XU J W.Principle and Application of Electrochemical Machining［M］.Beijng: National Defense Industry Press, 2001.(in Chinese)

[7] Hecker, G.E.Model-prototype comparison of free surface vortices ［J］.Journal of the Hydraulics Division, ASCE, 1981, 107(10): 1243-1259.

[8] CHEN Y L, WU CH, YE M, et al..Research on flow field characteristics of vertical vortex with multi-circle spiral flow ［J］.Journal of Sichuan University(Engineering Science Edition), 2007, 39(1): 13-17.(in Chinese)

[9] YE M, WU CH, CHEN Y L.Model investigation and numerical simulation of vertical vortex ［J］.Journal of Hydroelectric Engineering, 2007, 26(1): 33-36.(in Chinese)

[10] CHEN Y L.Research for Hydraulic Characteristics of Vertical Vortex at Hydraulic Intakes［D］.Chengdu: Sichuan University, 2006.(in Chinese)

[11] JOHN E H, WALTER C M.Velocity of air-core vortices at hydraulic intakes［J］.Journal of Hydraulic Engineering, 1994, 120 (3): 284-297.

[12] WANG M H, ZHU D, XU H Y.Use of micro-helix electrodes in improving performance of micro-ECM［J］.Mechan ical science and technology, 2006, 25(3): 348-351.(in Chinese)

[13] ZHI W F, LIH W H.The analysis and investigation on the microelectrode fabrication by electrochemical machining［J］.International Journal of Machine Tools & Manufacture, 2009, 46(7-8): 659-666.

[14] SCHUSTER R, KIRCHINER V, ALLONGUE P, et al..Electrochemical micromachining［J］.Science, 2000, 289: 98-101.

[15] WANG K, ZHU D.Wire electrochemical micro machining by using in situ fabricating wire electrode［J］.Opt. Precision Eng., 2009, 17(11): 2738-2743.(in Chinese)

[16] LIU Y, ZENG Y B, ZHU D, et al..Real-time control and data acquisition system for 3D micro electrochemical milling［J］.Opt. Precision Eng., 2010, 18(6): 1309-1318.(in Chinese)

[17] WANG M H, ZHU D, ZHANG ZH Y.Control and experimental research on microhole machining in micro-ECM ［J］.China Mechanical Engineering, 2007, 18(6): 646-650.(in Chinese)