They attempt to look into the composition of forces constituting the demand and the supplyfor new products and processes, especially in high-technology industries.
它们试图研究构成新产品和新工艺的需求和供应的力量架构，特别是在高技术工业中。
2
One of Marie Curie's outstanding achievements was to have understood the need to accumulate intense radioactive sources, not only to treat illness but also to maintain an abundant supplyfor research.