抽油机节能
pumping energy
the energy saving of oil pump
电动机节能
power conservation for motor
电动机节能之难
Bottleneck for Electromotor’s Energy-saving
分层节能机制
Energy conservation mechanism with layers
风机节能
energy conservation of fan
管理节能
Management of Energy-saving
management conservation
management energy saving
energy saving of management
Managerial energy conservation
节节能减排
Energy-saving Emission Reduction
节能节材
Energy-saving and Materials-saving
节能节地
Energy-saving and land-saving
节能节电
economizing on energy and electricity
节能节水
saving water and energy
Energy-saving and water-saving
Energy and Water Saving