4.3� � � � � � � � � � � � � � � �

һ � � � � � � � � � е � � � � � � � � ڰ � װ � � � � � � ʱ � � � � � � � � � � � � һ � � � � Ԥ � � � �F0� � � � � � � � � � � � � � � ϡ � � � � � Ԥ � � � �F0� � � � � a � � � � ʹ � � ֵ Ľ Ӵ � � � � Ͼ Ͳ � � � � � � � ѹ � � � � � � � � � � � � � � � � ʱ � � � � � � � � � ߵ � � � � � � � ȣ � � � � � � �F0� � � � � � � � � � ͼ � � ʾ � � � �

� � � � � � ʱ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ʱ

� � � �� � � ڹ � � � ʱ � � � � � � � � � � ͼ � � ʾ � � � � � � � � � � � � � Դ � � �n1ת � � � � � � � � � � ֵ Ľ Ӵ � � � � � � � � Ħ � � � � � � � � � � � � � � � � � ڴ � � ϵ � Ħ � � � �Ff� ķ � � � � � � � � � ֵ � Բ � � � ٶ ȷ � � � � � ͬ, � � � � � ּ � � � � � Ħ � � � � � � � � � � � ˶ � � � � � � � � � � ڴ Ӷ � � � � ϵ � Ħ � � � � � ķ � � � � � Ȼ � � � � � � ˶ � � � � � � � ͬ � � � � ͬ � � � � Ħ � � � �Ff� � � � � � � Ӷ � � � � � ת � �n2ת � � � � � � ʱ � � � � � � � � � ߵ � � � � � Ҳ � � Ӧ � ط � � � � ˱ 仯 � � � � � � � � � � � � � ֵ � һ � ߱ � � � � � � � � � � � � � � ߣ � � � � � � � � � � �F0� � � ӵ �F1� � � � � � � ϴ Ӷ � � ֵ � һ � ߱ � � � � ɣ � � � � � � ɱ ߣ � � ɱ � � � � � � �F0� � С � �F2� � � � � � � � Ƶ � � � Ϊ � � � � � � ʱ � � � ܳ � � Ȳ � � 㣬 � � � � Ľ � � � � � � � � � � � � � � � � � Ӧ � � � � � ɱ � � � � � � ļ � С � � � � � � � � � � � � � �F1� �F0� �F0� �F2� � � � � �� �F1� �F2� �2F0

� � � � � � � � � � � � � � һ � � Ϊ � � � � � I � � � � � � Ħ � � � �Ff� � � � � � � � � � � � � � � ĵ � � � � ص Ĵ � � � � � Ϊ � 㣬 � Ӷ � � � ɵ o� � � � � � � � � � � � � � � � � � � � � � � �Ff� �F1� �F2 � � � � � ڴ � � � � � � У � � � Ч � � � �Fe� � � � � � � � � � � � the awesome � ̶ � � � ļ � � � � � � � � � � Ǵ � � ʹ � � ֽ Ӵ � � � � ϵ ĸ � � � Ħ � � � � � � � ܺ ͣ � � � � � � � � � � ϵ � � � Ħ � � � �Ff� � � � � ڴ � � � � � � ݵ � � � Ч � � � � � � � � � У � � � � � � � � � � � � � � � � � � � � � � � � � � �Fe� �Ff� �F1� �F2 � � � � � � � � � � � ܴ � � ݵ Ĺ � � �P� � � � lambda ΪkW� � Ϊ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �P� �Fev/1000 � � � � � � � � ʽ � � � � ɵ a � � � � �F1� �F0+Fe/2� � � �F2� �F0-Fe/2