electropism趋电性electropref.电的；电子的；电解的=electr-.electrochemical behavior电化学行为electromagnetic sounding电磁测深electro graphic printing电法印刷electromyographic signal肌电信号electro - optic system光电系统electrophoresis switched带电泳开关的electrostatic feed-back静电反馈electrodialytic membranes电渗析膜electrothermal propulsion电热推进electroosmosis hypothesis电渗假说