调节规律
regulation rule
adjustment rule
regulation law and mechanism
regulation procedure
刚度调节规律
adjustment rule of stiffness
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