对技术分析来讲，买卖业务量和持仓量同价格一样重要。
Volume and open interest are as important to the technician as price.
提出了一种考虑需求不确定因素的双边可选择电力远期合同模型 ，给出了合同价格的计算公式 ，计算了买卖双方期权的最优敲定电价。
The calculation formula of price of forward contracts was given and the optimal strike price of options for seller and buyer were calculated.
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