This provides the ability to lock in profit margins and manage price risk, or alternatively, to speculate on the metals, softs and financial markets.
它可以控制利润率并管理价格风险，或者对金属，软商品和金融市场进行推测。
2
The paper analyses CFD commercial soft in-depth, puts forward some problems when CFD commercial softs are used in he underground excavation cluster of hydropower station and corresponding resolvent.