单词	dual economic
释义	dual economic 二元经济
随便看	internal friction internal-friction internal frictional angle internal frictional attachment internal frictional force internal frictional losses internal friction and ultrasonic attenuation internal friction angel internal friction angle internal friction angle of discontinuity internal friction angle of rock internal friction characteristic internal friction coefficient internal friction disc internal friction in metallurgy internal friction of liquids internal friction of rotor Internal friction peak internal friction peaks internal friction resistance internal friction theory internal friction twist principle internal frontal crest internal frosting Internal frxation