supply-demand relation

• 供求关系

supply-demand relation的用法和样例：

例句

1. Demand and supply can be balanced.
   供求关系可加以协调。
2. For a long time, the coal transport capacity, coal is the main reason for tightening supply and demand.
   长期以来，煤炭运输能力不足，是导致煤炭供求关系趋紧的主要原因。