电、气价格比
ratio of electric and gas price
不安全的电气电路
unreliable electrical circuit path
电气比例阀
electropneumatic proportional valve
electropneumatical propotional valve
Electro-pneumatic Proportional Pressure Valve
电-气比例阀
electricity-gas proportional valve
电气比例压力阀
Electro-pneumatic Proportional Pressure Valve
电气电子
Electronics and electricity
电气电子产品
electrical and electronicequipment
电气电子教学学报
Journal of Electrical & Electronic Education
电气电子设备
electrical and electronic equipmen ts
电气-气压法
electro-pneumatic operated valve
峰谷电价比
electrical price pattern
ratio of peak to off-peak electricity price
ratio of peak-valley price
购电电价
purchase electricity price