supply and demand

n.

供求；

Changes in relative wages, 1983-1997: Supply and demand factors
Changes in Relative Wages, 1963鈥7: Supply and Demand Factors
Instrumental Variables and the Search for Identification: From Supply and Demand to Natural Experiments
Regulation of supply and demand for maternal nutrients in mammals by imprinted genes.
Energetic and fitness costs of mismatching resource supply and demand in seasonally breeding birds.
Supply and demand in cerebral energy metabolism: the role of nutrient transporters
Iron supply and demand in the upper ocean
Competition between tree seedlings and herbaceous vegetaion: support for a theory of resource supply and demand.
Future supply and demand for oncologists : challenges to assuring access to oncology services.
Personal Bankruptcy and Credit Supply and Demand