high efficiency electrical heating 高效电加热

overall electrical efficiency 总电效率

electrical efficiency [电] 电效率 ; 电机效率

thermal-electrical efficiency 热电效率

Energy Efficiency of Electrical Lighting 照明节能

Electrical system efficiency 系统电气效率

electrical heating efficiency 电加热效率

transmission efficiency of electrical cable 电力电缆传输效率

electrical conduction efficiency 导电效率

high efficiency non-oriented electrical steel 高效无取向电工钢