electrolessadj.无电的electropref.电的；电子的；电解的=electr-.electro-osmotic pressure电渗压electrolytic semiconductor电解半导体electro excitation therapy电兴奋疗法electrology characteristic电学特性Electrochemistry reduction电化学还原electrostatic writing head静电记录头electro-hydraulic Switch电液转辙机electrolytic fractionating电解分离electromagnetic flow meter电磁量计,电磁流量计electrochemical transducer电化换能器