class NumberListener implements ActionListener{ public void actionPerformed(ActionEvent e){ if (!append) { tf.setText(\"\") append=true } String s=tf.getText() s+=e.getActionCommand() tf.setText(s) if (!btn[10].isE

电力系统考虑网损的经济调度程序，采用的是经典算例，算例实用性较好。-Net loss of power system considering the economic dispatch procedures used are the classic example, a good practical example.