系统操作器有三大主要功能：传送（地区间和国际中转）、程控和电力系统平衡。
The system operator has three main functions : transfer (inter-regional and international transit), process control and balance of the electric power system.
这种基金会设置一个价格区间，例如一个下限和上限，高管会在这一价格附近进行交易操作。
This hedge puts a "collar," i.e., a floor and ceiling, around the price an executive gets paid for stock.
提出了区间数互补判断矩阵排序的目标规划法，该方法具有操作简便和易于上机实现的特点。
A goal programming method for interval Numbers complementary judgment matrix is presented and characterized by simple operation and it is easy to implement on computer.
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